18839742160 has 40 divisors (see below), whose sum is σ = 43860101256. Its totient is φ = 7525969920.

The previous prime is 18839742157. The next prime is 18839742161. The reversal of 18839742160 is 6124793881.

It can be written as a sum of positive squares in 4 ways, for example, as 847275664 + 17992466496 = 29108^2 + 134136^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18839742161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93849 + ... + 215608.

Almost surely, 2^18839742160 is an apocalyptic number.

18839742160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18839742160 is an abundant number, since it is smaller than the sum of its proper divisors (25020359096).

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

18839742160 is a wasteful number, since it uses less digits than its factorization.

18839742160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310231 (or 310225 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 18839742160 in words is "eighteen billion, eight hundred thirty-nine million, seven hundred forty-two thousand, one hundred sixty".