164831790 has 32 divisors (see below), whose sum is σ = 397024416. Its totient is φ = 43796480.

The previous prime is 164831761. The next prime is 164831791. The reversal of 164831790 is 97138461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164831791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1347 + ... + 18206.

It is an arithmetic number, because the mean of its divisors is an integer number (12407013).

Almost surely, 2^164831790 is an apocalyptic number.

164831790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164831790 is an abundant number, since it is smaller than the sum of its proper divisors (232192626).

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

164831790 is a wasteful number, since it uses less digits than its factorization.

164831790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19844.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 164831790 is about 12838.6833437078. The cubic root of 164831790 is about 548.2942081718.

The spelling of 164831790 in words is "one hundred sixty-four million, eight hundred thirty-one thousand, seven hundred ninety".