18964065392 has 40 divisors (see below), whose sum is σ = 37115874432. Its totient is φ = 9385918400.

The previous prime is 18964065353. The next prime is 18964065397. The reversal of 18964065392 is 29356046981.

It is a super-2 number, since 2×18964065392² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18964065397) 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, 2583167 + ... + 2590497.

Almost surely, 2^18964065392 is an apocalyptic number.

It is an amenable number.

18964065392 is a deficient number, since it is larger than the sum of its proper divisors (18151809040).

18964065392 is a wasteful number, since it uses less digits than its factorization.

18964065392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8957 (or 8951 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 18964065392 in words is "eighteen billion, nine hundred sixty-four million, sixty-five thousand, three hundred ninety-two".