18249964 has 12 divisors (see below), whose sum is σ = 32016600. Its totient is φ = 9102368.

The previous prime is 18249947. The next prime is 18249997. The reversal of 18249964 is 46994281.

It is a super-2 number, since 2×18249964² = 666122372002592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18249964.

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 3 ways as a sum of consecutive naturals, for example, 3769 + ... + 7120.

It is an arithmetic number, because the mean of its divisors is an integer number (2668050).

Almost surely, 2^18249964 is an apocalyptic number.

It is an amenable number.

18249964 is a deficient number, since it is larger than the sum of its proper divisors (13766636).

18249964 is a wasteful number, since it uses less digits than its factorization.

18249964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11312 (or 11310 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 18249964 is about 4271.9976591754. The cubic root of 18249964 is about 263.2816982916.

The spelling of 18249964 in words is "eighteen million, two hundred forty-nine thousand, nine hundred sixty-four".