18873912 has 32 divisors (see below), whose sum is σ = 47494800. Its totient is φ = 6249984.

The previous prime is 18873889. The next prime is 18873913. The reversal of 18873912 is 21937881.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1264 + ... + 6272.

Almost surely, 2^18873912 is an apocalyptic number.

18873912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18873912 is an abundant number, since it is smaller than the sum of its proper divisors (28620888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18873912 is a wasteful number, since it uses less digits than its factorization.

18873912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5175 (or 5171 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 18873912 is about 4344.4115827117. The cubic root of 18873912 is about 266.2485851497.

The spelling of 18873912 in words is "eighteen million, eight hundred seventy-three thousand, nine hundred twelve".