18500311914 has 48 divisors (see below), whose sum is σ = 45573409728. Its totient is φ = 4974872448.

The previous prime is 18500311871. The next prime is 18500311919. The reversal of 18500311914 is 41911300581.

It is not an unprimeable number, because it can be changed into a prime (18500311919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1845774 + ... + 1855769.

It is an arithmetic number, because the mean of its divisors is an integer number (949446036).

Almost surely, 2^18500311914 is an apocalyptic number.

18500311914 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18500311914 is an abundant number, since it is smaller than the sum of its proper divisors (27073097814).

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

18500311914 is a wasteful number, since it uses less digits than its factorization.

18500311914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701579 (or 3701572 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 33.

The spelling of 18500311914 in words is "eighteen billion, five hundred million, three hundred eleven thousand, nine hundred fourteen".