18701868352 has 14 divisors (see below), whose sum is σ = 37111520138. Its totient is φ = 9350934144.

The previous prime is 18701868323. The next prime is 18701868391. The reversal of 18701868352 is 25386810781.

It can be written as a sum of positive squares in only one way, i.e., 18220680256 + 481188096 = 134984^2 + 21936^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18701868296 and 18701868305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 146108283 + ... + 146108410.

It is an arithmetic number, because the mean of its divisors is an integer number (2650822867).

Almost surely, 2^18701868352 is an apocalyptic number.

It is an amenable number.

18701868352 is a deficient number, since it is larger than the sum of its proper divisors (18409651786).

18701868352 is an equidigital number, since it uses as much as digits as its factorization.

18701868352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292216705 (or 292216695 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 18701868352 in words is "eighteen billion, seven hundred one million, eight hundred sixty-eight thousand, three hundred fifty-two".