18873916 has 24 divisors (see below), whose sum is σ = 35893760. Its totient is φ = 8650800.

The previous prime is 18873913. The next prime is 18873919. The reversal of 18873916 is 61937881.

It is an interprime number because it is at equal distance from previous prime (18873913) and next prime (18873919).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18873913) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1650 + ... + 6361.

Almost surely, 2^18873916 is an apocalyptic number.

It is an amenable number.

18873916 is a deficient number, since it is larger than the sum of its proper divisors (17019844).

18873916 is a wasteful number, since it uses less digits than its factorization.

18873916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8065 (or 8063 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 18873916 is about 4344.4120430733. The cubic root of 18873916 is about 266.2486039587.

The spelling of 18873916 in words is "eighteen million, eight hundred seventy-three thousand, nine hundred sixteen".