180709864 has 16 divisors (see below), whose sum is σ = 358762500. Its totient is φ = 85039872.

The previous prime is 180709849. The next prime is 180709883. The reversal of 180709864 is 468907081.

180709864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 180687364 + 22500 = 13442^2 + 150^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 180709864.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664239 + ... + 664510.

Almost surely, 2^180709864 is an apocalyptic number.

It is an amenable number.

180709864 is a deficient number, since it is larger than the sum of its proper divisors (178052636).

180709864 is a wasteful number, since it uses less digits than its factorization.

180709864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328772 (or 1328768 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 180709864 is about 13442.8369029755. The cubic root of 180709864 is about 565.3628744180.

The spelling of 180709864 in words is "one hundred eighty million, seven hundred nine thousand, eight hundred sixty-four".