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19 (number) facts for kids

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← 18 19 20 →
Cardinal nineteen
Ordinal 19th
(nineteenth)
Factorization prime
Prime 8th
Divisors 1, 19
Greek numeral ΙΘ´
Roman numeral XIX
Binary 100112
Ternary 2013
Senary 316
Octal 238
Duodecimal 1712
Hexadecimal 1316

Nineteen is a number. It is a whole number that comes right after eighteen and just before twenty. Nineteen is an odd number, which means it cannot be divided evenly by two.

It is also a special kind of number called a prime number. A prime number can only be divided evenly by 1 and itself. Nineteen is the 8th prime number. The prime numbers before it are 2, 3, 5, 7, 11, 13, and 17.

In Roman numerals, which were used by ancient Romans, the number 19 is written as XIX.

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