18339722352 has 120 divisors (see below), whose sum is σ = 61236445200. Its totient is φ = 5239914624.

The previous prime is 18339722339. The next prime is 18339722369. The reversal of 18339722352 is 25322793381.

18339722352 is a `hidden beast` number, since 18 + 339 + 72 + 235 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 18339722298 and 18339722307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 412027 + ... + 454362.

It is an arithmetic number, because the mean of its divisors is an integer number (510303710).

Almost surely, 2^18339722352 is an apocalyptic number.

18339722352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18339722352 is an abundant number, since it is smaller than the sum of its proper divisors (42896722848).

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

18339722352 is a wasteful number, since it uses less digits than its factorization.

18339722352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866420 (or 866401 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 18339722352 in words is "eighteen billion, three hundred thirty-nine million, seven hundred twenty-two thousand, three hundred fifty-two".