Topic summary18 (number) Expand Summary Related topics ←10111213141516171819→List of numbersIntegers←0102030405060708090→CardinaleighteenOrdinal18th(eighteenth)Numeral systemoctodecimalFactorization2 × 3Divisors1, 2, 3, 6, 9, 18Greek numeralΙΗ´Roman numeralXVIII, xviiiUnicode symbol0031 0038Binary100102Ternary2003Senary306Octal228Duodecimal1612Hexadecimal1216Hebrew numeralי"חBabylonian numeral𒌋𒐜Look up in Wiktionary, the free dictionary. Wikipedia source
