18623663924 has 24 divisors (see below), whose sum is σ = 32907490560. Its totient is φ = 9221958144.

The previous prime is 18623663923. The next prime is 18623663957. The reversal of 18623663924 is 42936632681.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18623663923) 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, 118067 + ... + 226245.

It is an arithmetic number, because the mean of its divisors is an integer number (1371145440).

Almost surely, 2^18623663924 is an apocalyptic number.

It is an amenable number.

18623663924 is a deficient number, since it is larger than the sum of its proper divisors (14283826636).

18623663924 is a wasteful number, since it uses less digits than its factorization.

18623663924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108599 (or 108597 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 50.

The spelling of 18623663924 in words is "eighteen billion, six hundred twenty-three million, six hundred sixty-three thousand, nine hundred twenty-four".