18375964 has 24 divisors (see below), whose sum is σ = 34643840. Its totient is φ = 8500464.

The previous prime is 18375949. The next prime is 18375967. The reversal of 18375964 is 46957381.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 18375964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18375967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457 + ... + 6079.

Almost surely, 2^18375964 is an apocalyptic number.

It is an amenable number.

18375964 is a deficient number, since it is larger than the sum of its proper divisors (16267876).

18375964 is a wasteful number, since it uses less digits than its factorization.

18375964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5689 (or 5687 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 18375964 is about 4286.7194916393. The cubic root of 18375964 is about 263.8862189515.

The spelling of 18375964 in words is "eighteen million, three hundred seventy-five thousand, nine hundred sixty-four".