18503293056 has 32 divisors (see below), whose sum is σ = 49149373200. Its totient is φ = 6167764224.

The previous prime is 18503293043. The next prime is 18503293057. The reversal of 18503293056 is 65039230581.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 18503292999 and 18503293017.

It is not an unprimeable number, because it can be changed into a prime (18503293057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24092446 + ... + 24093213.

Almost surely, 2^18503293056 is an apocalyptic number.

18503293056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18503293056 is an abundant number, since it is smaller than the sum of its proper divisors (30646080144).

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

18503293056 is an equidigital number, since it uses as much as digits as its factorization.

18503293056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48185676 (or 48185664 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 18503293056 in words is "eighteen billion, five hundred three million, two hundred ninety-three thousand, fifty-six".