18000964 has 12 divisors (see below), whose sum is σ = 31531500. Its totient is φ = 8991968.

The previous prime is 18000949. The next prime is 18000971. The reversal of 18000964 is 46900081.

It can be written as a sum of positive squares in 2 ways, for example, as 14760964 + 3240000 = 3842^2 + 1800^2 .

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, 6642 + ... + 8950.

It is an arithmetic number, because the mean of its divisors is an integer number (2627625).

Almost surely, 2^18000964 is an apocalyptic number.

It is an amenable number.

18000964 is a deficient number, since it is larger than the sum of its proper divisors (13530536).

18000964 is a wasteful number, since it uses less digits than its factorization.

18000964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262 (or 4260 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18000964 is about 4242.7542940877. The cubic root of 18000964 is about 262.0788178461.

The spelling of 18000964 in words is "eighteen million, nine hundred sixty-four", and thus it is an aban number.