-180 is an even number.
-180 is a Harshad number, which means it is divisible by the sum of its digits (1 + 8 + 0 = 9, and -180 is divisible by 9).
In binary, -180 is represented as 1111111111111111111111111111111111111111111111111111111101001100.
In hex, -180 is represented as ffffffffffffff4c.