164864994 has 16 divisors (see below), whose sum is σ = 376834368. Its totient is φ = 47104272.

The previous prime is 164864899. The next prime is 164865011. The reversal of 164864994 is 499468461.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1962637 + ... + 1962720.

It is an arithmetic number, because the mean of its divisors is an integer number (23552148).

Almost surely, 2^164864994 is an apocalyptic number.

164864994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

164864994 is an abundant number, since it is smaller than the sum of its proper divisors (211969374).

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

164864994 is a wasteful number, since it uses less digits than its factorization.

164864994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925369.

The product of its digits is 1492992, while the sum is 51.

The square root of 164864994 is about 12839.9764018475. The cubic root of 164864994 is about 548.3310221435.

The spelling of 164864994 in words is "one hundred sixty-four million, eight hundred sixty-four thousand, nine hundred ninety-four".