180995864 has 32 divisors (see below), whose sum is σ = 388800000. Its totient is φ = 77379360.

The previous prime is 180995839. The next prime is 180995909. The reversal of 180995864 is 468599081.

It is a happy number.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20387 + ... + 27885.

It is an arithmetic number, because the mean of its divisors is an integer number (12150000).

Almost surely, 2^180995864 is an apocalyptic number.

180995864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

180995864 is an abundant number, since it is smaller than the sum of its proper divisors (207804136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180995864 is a wasteful number, since it uses less digits than its factorization.

180995864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7943 (or 7939 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 180995864 is about 13453.4703329661. The cubic root of 180995864 is about 565.6609739093.

The spelling of 180995864 in words is "one hundred eighty million, nine hundred ninety-five thousand, eight hundred sixty-four".