18523138110 has 16 divisors (see below), whose sum is σ = 44455531536. Its totient is φ = 4939503488.

The previous prime is 18523138093. The next prime is 18523138147. The reversal of 18523138110 is 1183132581.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308718939 + ... + 308718998.

It is an arithmetic number, because the mean of its divisors is an integer number (2778470721).

Almost surely, 2^18523138110 is an apocalyptic number.

18523138110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18523138110 is an abundant number, since it is smaller than the sum of its proper divisors (25932393426).

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

18523138110 is a wasteful number, since it uses less digits than its factorization.

18523138110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617437947.

The product of its (nonzero) digits is 5760, while the sum is 33.

The spelling of 18523138110 in words is "eighteen billion, five hundred twenty-three million, one hundred thirty-eight thousand, one hundred ten".