18696232536 has 16 divisors (see below), whose sum is σ = 46740581400. Its totient is φ = 6232077504.

The previous prime is 18696232501. The next prime is 18696232543. The reversal of 18696232536 is 63523269681.

It is a super-2 number, since 2×18696232536² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389504821 + ... + 389504868.

Almost surely, 2^18696232536 is an apocalyptic number.

It is an amenable number.

18696232536 is an abundant number, since it is smaller than the sum of its proper divisors (28044348864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18696232536 is a wasteful number, since it uses less digits than its factorization.

18696232536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779009698 (or 779009694 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 51.

The spelling of 18696232536 in words is "eighteen billion, six hundred ninety-six million, two hundred thirty-two thousand, five hundred thirty-six".