18
Natural number
Also known as eighteen · XVIII · 18*1 · 1*18 · the number 18 · ⑱
- Instance of
- positive integer
- , abundant number
- , even number
- +4 more
Overview
All data
71 statements · 4% with external sources · numbers in brackets are citations
- Unicode character
- ⒅
- ⓲
- ⑱
- ⒙
- 𝋲
- Code
- ௰௮ encoding: Tamil number notation using ௰, ௱, ௲
- ௧௮ encoding: Tamil number notation using ASCII 0
- XVIII encoding: Roman numeral in basic notation
- 𒌋𒐜 encoding: Babylonian numerals
- 10010 encoding: binary numeral system
- 22 encoding: octal
- 16 encoding: duodecimal
- 12 encoding: hexadecimal
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- 200 encoding: ternary numeral system
- 102 encoding: quaternary numeral system
- 33 encoding: quinary
- 30 encoding: senary
- 24 encoding: septenary
- 20 encoding: nonary
- 18 encoding: decimal
- 17 encoding: undecimal
- 15 encoding: base 13
- 14 encoding: tetradecimal
- 13 encoding: pentadecimal
- 11 encoding: heptadecimal
- 10 encoding: octodecimal
- I encoding: enneadecimal, vigesimal
- ΙΗʹ encoding: Greek alphabetic numerals
- ൧൮ encoding: Malayalam number notation using ASCII 0
- ൧൰൮ encoding: Malayalam number notation using ൰, ൱, ൲
On other databases
19 identifiers linking 18 across the web's reference databases
- BabelNet ID00000042n
- Concepticon concept set ID1713
- Encyclopædia Britannica Online IDtopic/the-number-eighteen
- FactGrid item IDQ419595
- Factordb ID18
- Fandom article IDgoogology:18
- Gran Enciclopèdia Catalana IDdivuit
- Gran Enciclopèdia Catalana ID (former scheme)0227899
- KIT Linked Open Numbers ID18
- MathWorld ID18
- Namuwiki ID18
- NCI Thesaurus IDC111798
- NicoNicoPedia word article ID18
- OmegaWiki Defined Meaning7014
- Personality Database profile ID535000
- Pixiv Encyclopedia ID18
- ProofWiki ID18
- UMLS CUIC3715206
- WikiKids ID18_(getal)