18340687914 has 32 divisors (see below), whose sum is σ = 38031538176. Its totient is φ = 5890274160.

The previous prime is 18340687913. The next prime is 18340687943. The reversal of 18340687914 is 41978604381.

It is not an unprimeable number, because it can be changed into a prime (18340687913) 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, 174972 + ... + 259415.

It is an arithmetic number, because the mean of its divisors is an integer number (1188485568).

Almost surely, 2^18340687914 is an apocalyptic number.

18340687914 is an abundant number, since it is smaller than the sum of its proper divisors (19690850262).

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

18340687914 is a wasteful number, since it uses less digits than its factorization.

18340687914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434650.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 18340687914 in words is "eighteen billion, three hundred forty million, six hundred eighty-seven thousand, nine hundred fourteen".