164491892 has 12 divisors (see below), whose sum is σ = 303011520. Its totient is φ = 77917176.

The previous prime is 164491891. The next prime is 164491919. The reversal of 164491892 is 298194461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164491891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1082108 + ... + 1082259.

It is an arithmetic number, because the mean of its divisors is an integer number (25250960).

Almost surely, 2^164491892 is an apocalyptic number.

It is an amenable number.

164491892 is a deficient number, since it is larger than the sum of its proper divisors (138519628).

164491892 is a wasteful number, since it uses less digits than its factorization.

164491892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164390 (or 2164388 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 164491892 is about 12825.4392517372. The cubic root of 164491892 is about 547.9170714726.

The spelling of 164491892 in words is "one hundred sixty-four million, four hundred ninety-one thousand, eight hundred ninety-two".