Open main menu

19 (number)

natural number

Nineteen is a number. It comes between eighteen and twenty, and is an odd number. It is also the 8th prime number, after 2, 3, 5, 7, 11, 13, and 17.

← 18 19 20 →
Cardinalnineteen
Ordinal19th
(nineteenth)
Factorizationprime
Prime8th
Divisors1, 19
Greek numeralΙΘ´
Roman numeralXIX
Binary100112
Ternary2013
Quaternary1034
Quinary345
Senary316
Octal238
Duodecimal1712
Hexadecimal1316
VigesimalJ20
Base 36J36

In Roman numerals, 19 is written as XIX.