18873964 has 6 divisors (see below), whose sum is σ = 33029444. Its totient is φ = 9436980.

The previous prime is 18873919. The next prime is 18873977. The reversal of 18873964 is 46937881.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2359242 + ... + 2359249.

Almost surely, 2^18873964 is an apocalyptic number.

It is an amenable number.

18873964 is a deficient number, since it is larger than the sum of its proper divisors (14155480).

18873964 is a wasteful number, since it uses less digits than its factorization.

18873964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718495 (or 4718493 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 18873964 is about 4344.4175674076. The cubic root of 18873964 is about 266.2488296656.

The spelling of 18873964 in words is "eighteen million, eight hundred seventy-three thousand, nine hundred sixty-four".