18968415724 has 12 divisors (see below), whose sum is σ = 33213611200. Its totient is φ = 9478812528.

The previous prime is 18968415709. The next prime is 18968415727. The reversal of 18968415724 is 42751486981.

It is not an unprimeable number, because it can be changed into a prime (18968415727) 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, 1340919 + ... + 1354990.

Almost surely, 2^18968415724 is an apocalyptic number.

It is an amenable number.

18968415724 is a deficient number, since it is larger than the sum of its proper divisors (14245195476).

18968415724 is a wasteful number, since it uses less digits than its factorization.

18968415724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697672 (or 2697670 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 55.

The spelling of 18968415724 in words is "eighteen billion, nine hundred sixty-eight million, four hundred fifteen thousand, seven hundred twenty-four".