18679957792 has 12 divisors (see below), whose sum is σ = 36776166966. Its totient is φ = 9339978880.

The previous prime is 18679957783. The next prime is 18679957831. The reversal of 18679957792 is 29775997681.

It can be written as a sum of positive squares in only one way, i.e., 12048135696 + 6631822096 = 109764^2 + 81436^2 .

It is a super-2 number, since 2×18679957792² (a number of 21 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 291874309 + ... + 291874372.

Almost surely, 2^18679957792 is an apocalyptic number.

It is an amenable number.

18679957792 is a deficient number, since it is larger than the sum of its proper divisors (18096209174).

18679957792 is an equidigital number, since it uses as much as digits as its factorization.

18679957792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583748691 (or 583748683 counting only the distinct ones).

The product of its digits is 120022560, while the sum is 70.

The spelling of 18679957792 in words is "eighteen billion, six hundred seventy-nine million, nine hundred fifty-seven thousand, seven hundred ninety-two".