18711914500 has 48 divisors (see below), whose sum is σ = 42643665792. Its totient is φ = 7159336800.

The previous prime is 18711914497. The next prime is 18711914513. The reversal of 18711914500 is 541911781.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18711914500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 802062 + ... + 825061.

It is an arithmetic number, because the mean of its divisors is an integer number (888409704).

Almost surely, 2^18711914500 is an apocalyptic number.

18711914500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18711914500 is an abundant number, since it is smaller than the sum of its proper divisors (23931751292).

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

18711914500 is a wasteful number, since it uses less digits than its factorization.

18711914500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627165 (or 1627153 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 37.

The spelling of 18711914500 in words is "eighteen billion, seven hundred eleven million, nine hundred fourteen thousand, five hundred".