18869959760 has 20 divisors (see below), whose sum is σ = 43872656628. Its totient is φ = 7547983872.

The previous prime is 18869959741. The next prime is 18869959777. The reversal of 18869959760 is 6795996881.

It can be written as a sum of positive squares in 2 ways, for example, as 3452267536 + 15417692224 = 58756^2 + 124168^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 117937169 + ... + 117937328.

Almost surely, 2^18869959760 is an apocalyptic number.

18869959760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18869959760 is an abundant number, since it is smaller than the sum of its proper divisors (25002696868).

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

18869959760 is a wasteful number, since it uses less digits than its factorization.

18869959760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235874510 (or 235874504 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 68.

The spelling of 18869959760 in words is "eighteen billion, eight hundred sixty-nine million, nine hundred fifty-nine thousand, seven hundred sixty".