164890916892 has 72 divisors (see below), whose sum is σ = 465494558256. Its totient is φ = 50735662848.

The previous prime is 164890916891. The next prime is 164890916959. The reversal of 164890916892 is 298619098461.

164890916892 is a `hidden beast` number, since 1 + 6 + 489 + 0 + 9 + 1 + 68 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164890916891) 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, 6512013 + ... + 6537284.

It is an arithmetic number, because the mean of its divisors is an integer number (6465202198).

Almost surely, 2^164890916892 is an apocalyptic number.

164890916892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

164890916892 is an abundant number, since it is smaller than the sum of its proper divisors (300603641364).

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

164890916892 is a wasteful number, since it uses less digits than its factorization.

164890916892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13049329 (or 13049315 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 63.

The spelling of 164890916892 in words is "one hundred sixty-four billion, eight hundred ninety million, nine hundred sixteen thousand, eight hundred ninety-two".