18664707792 has 40 divisors (see below), whose sum is σ = 48242345824. Its totient is φ = 6218319744.

The previous prime is 18664707769. The next prime is 18664707811. The reversal of 18664707792 is 29770746681.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7798 + ... + 193365.

Almost surely, 2^18664707792 is an apocalyptic number.

18664707792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18664707792 is an abundant number, since it is smaller than the sum of its proper divisors (29577638032).

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

18664707792 is a wasteful number, since it uses less digits than its factorization.

18664707792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203107 (or 203101 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 57.

The spelling of 18664707792 in words is "eighteen billion, six hundred sixty-four million, seven hundred seven thousand, seven hundred ninety-two".