18314723472 has 20 divisors (see below), whose sum is σ = 47313035760. Its totient is φ = 6104907808.

The previous prime is 18314723459. The next prime is 18314723503. The reversal of 18314723472 is 27432741381.

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, 190778322 + ... + 190778417.

It is an arithmetic number, because the mean of its divisors is an integer number (2365651788).

Almost surely, 2^18314723472 is an apocalyptic number.

18314723472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18314723472 is an abundant number, since it is smaller than the sum of its proper divisors (28998312288).

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

18314723472 is a wasteful number, since it uses less digits than its factorization.

18314723472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381556750 (or 381556744 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The spelling of 18314723472 in words is "eighteen billion, three hundred fourteen million, seven hundred twenty-three thousand, four hundred seventy-two".