18863672 has 16 divisors (see below), whose sum is σ = 35701560. Its totient is φ = 9343264.

The previous prime is 18863671. The next prime is 18863681. The reversal of 18863672 is 27636881.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18863671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10163 + ... + 11874.

Almost surely, 2^18863672 is an apocalyptic number.

It is an amenable number.

18863672 is a deficient number, since it is larger than the sum of its proper divisors (16837888).

18863672 is a wasteful number, since it uses less digits than its factorization.

18863672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22150 (or 22146 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 18863672 is about 4343.2328972782. The cubic root of 18863672 is about 266.2004255750.

The spelling of 18863672 in words is "eighteen million, eight hundred sixty-three thousand, six hundred seventy-two".