18383729464 has 16 divisors (see below), whose sum is σ = 34478163720. Its totient is φ = 9189552480.

The previous prime is 18383729453. The next prime is 18383729473. The reversal of 18383729464 is 46492738381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255007 + ... + 319054.

Almost surely, 2^18383729464 is an apocalyptic number.

It is an amenable number.

18383729464 is a deficient number, since it is larger than the sum of its proper divisors (16094434256).

18383729464 is a wasteful number, since it uses less digits than its factorization.

18383729464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578070 (or 578066 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 55.

The spelling of 18383729464 in words is "eighteen billion, three hundred eighty-three million, seven hundred twenty-nine thousand, four hundred sixty-four".