18737968 has 10 divisors (see below), whose sum is σ = 36304844. Its totient is φ = 9368976.

The previous prime is 18737963. The next prime is 18737969. The reversal of 18737968 is 86973781.

It is a super-2 number, since 2×18737968² = 702222889538048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18737963) by changing a digit.

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 as a sum of consecutive naturals, namely, 585546 + ... + 585577.

Almost surely, 2^18737968 is an apocalyptic number.

It is an amenable number.

18737968 is a deficient number, since it is larger than the sum of its proper divisors (17566876).

18737968 is a wasteful number, since it uses less digits than its factorization.

18737968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171131 (or 1171125 counting only the distinct ones).

The product of its digits is 508032, while the sum is 49.

The square root of 18737968 is about 4328.7374602764. The cubic root of 18737968 is about 265.6078038787.

The spelling of 18737968 in words is "eighteen million, seven hundred thirty-seven thousand, nine hundred sixty-eight".