180444863932 has 12 divisors (see below), whose sum is σ = 315801780280. Its totient is φ = 90215783856.

The previous prime is 180444863867. The next prime is 180444863933. The reversal of 180444863932 is 239368444081.

It is a self number, because there is not a number n which added to its sum of digits gives 180444863932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180444863933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1600707 + ... + 1709722.

Almost surely, 2^180444863932 is an apocalyptic number.

It is an amenable number.

180444863932 is a deficient number, since it is larger than the sum of its proper divisors (135356916348).

180444863932 is a wasteful number, since it uses less digits than its factorization.

180444863932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324060 (or 3324058 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 180444863932 in words is "one hundred eighty billion, four hundred forty-four million, eight hundred sixty-three thousand, nine hundred thirty-two".