18910451214 has 32 divisors (see below), whose sum is σ = 44234976000. Its totient is φ = 5971721112.

The previous prime is 18910451179. The next prime is 18910451239. The reversal of 18910451214 is 41215401981.

18910451214 is a `hidden beast` number, since 189 + 1 + 0 + 451 + 21 + 4 = 666.

It is a congruent number.

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, 9214594 + ... + 9216645.

It is an arithmetic number, because the mean of its divisors is an integer number (1382343000).

Almost surely, 2^18910451214 is an apocalyptic number.

18910451214 is an abundant number, since it is smaller than the sum of its proper divisors (25324524786).

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

18910451214 is a wasteful number, since it uses less digits than its factorization.

18910451214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18431269 (or 18431263 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The spelling of 18910451214 in words is "eighteen billion, nine hundred ten million, four hundred fifty-one thousand, two hundred fourteen".