One thousand eight hundred
1800 is an even number.
1800 is a Harshad number, which means it is divisible by the sum of its digits (1 + 8 + 0 + 0 = 9, and 1800 is divisible by 9).
In binary, 1800 is represented as 11100001000.
In hex, 1800 is represented as 708.
Prime factorization of 1800: 23 * 32 * 52.
Factors of 1800 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 72, 75, 90, 100, 120, 150, 180, 200, 225, 300, 360, 450, 600, 900, 1800.