18683557792 has 24 divisors (see below), whose sum is σ = 37638681696. Its totient is φ = 9124527552.

The previous prime is 18683557769. The next prime is 18683557801. The reversal of 18683557792 is 29775538681.

It is a self number, because there is not a number n which added to its sum of digits gives 18683557792.

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, 6787708 + ... + 6790459.

It is an arithmetic number, because the mean of its divisors is an integer number (1568278404).

Almost surely, 2^18683557792 is an apocalyptic number.

It is an amenable number.

18683557792 is an abundant number, since it is smaller than the sum of its proper divisors (18955123904).

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

18683557792 is a wasteful number, since it uses less digits than its factorization.

18683557792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13578220 (or 13578212 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 61.

The spelling of 18683557792 in words is "eighteen billion, six hundred eighty-three million, five hundred fifty-seven thousand, seven hundred ninety-two".