18920891710 has 32 divisors (see below), whose sum is σ = 41212566720. Its totient is φ = 6105564672.

The previous prime is 18920891701. The next prime is 18920891713. The reversal of 18920891710 is 1719802981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18920891713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7948765 + ... + 7951144.

It is an arithmetic number, because the mean of its divisors is an integer number (1287892710).

Almost surely, 2^18920891710 is an apocalyptic number.

18920891710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18920891710 is an abundant number, since it is smaller than the sum of its proper divisors (22291675010).

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

18920891710 is a wasteful number, since it uses less digits than its factorization.

18920891710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15899940.

The product of its (nonzero) digits is 72576, while the sum is 46.

The spelling of 18920891710 in words is "eighteen billion, nine hundred twenty million, eight hundred ninety-one thousand, seven hundred ten".