18712744860 has 24 divisors (see below), whose sum is σ = 52395685776. Its totient is φ = 4990065280.

The previous prime is 18712744789. The next prime is 18712744867. The reversal of 18712744860 is 6844721781.

It is a hoax number, since the sum of its digits (48) 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 (18712744867) 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, 155939481 + ... + 155939600.

It is an arithmetic number, because the mean of its divisors is an integer number (2183153574).

Almost surely, 2^18712744860 is an apocalyptic number.

18712744860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18712744860 is an abundant number, since it is smaller than the sum of its proper divisors (33682940916).

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

18712744860 is a wasteful number, since it uses less digits than its factorization.

18712744860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311879093 (or 311879091 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 18712744860 in words is "eighteen billion, seven hundred twelve million, seven hundred forty-four thousand, eight hundred sixty".