18
natural number
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Summary
18 is a positive integer[1]. 18 ranks in the top 2% of positive integer entities by monthly Wikipedia readership (5,501 views/month).[2]
Key Facts
- Instance of: abundant number[3], even number[4], heptagonal number[5], pentagonal pyramidal number[6], composite number[7], harshad number[8]
- Follows: 17[9]
- Followed by: 19[10]
- Commons category: 18 (number)[11]
- Said to be the same as: Q6966529[12]
- Unicode character: ⒅[13], ⓲[14], ⑱[15], ⒙[16], 𝋲[17]
- Topic's main category: Category:Eighteen[18]
- Numeric value: 18[19]
- Different from: 18[20]
- Code: ௰௮[21], ௧௮[22], XVIII[23], 𒌋𒐜[24], 10010[25], 22[26], 16[27], 12[28], 200[29], 102[30], 33[31], 30[32], 24[33], 20[34]
- Prime factor: 2[35], 3[36]
- Maintained by WikiProject: WikiProject Mathematics[37]
- Number of decimal digits: 2[38]
Body
Influence
Things named for 18 include Seishun 18 Ticket[39], a trademark[40], in Japan[41], founded in 1982[42] and Cain XVIII[43], a film[44], directed by Nadezhda Kosheverova[45].
Why It Matters
18 has Wikipedia articles in 29 language editions, a strong signal of global cultural recognition.[46] 18 is known by 61 alternative names across languages and contexts.[47]
Entities named for 18 include Seishun 18 Ticket[39], a trademark[40], in Japan[41], founded in 1982[42] and Cain XVIII[43], a film[44], directed by Nadezhda Kosheverova[45].