164642886 has 24 divisors (see below), whose sum is σ = 361615800. Its totient is φ = 54128736.

The previous prime is 164642869. The next prime is 164642893. The reversal of 164642886 is 688246461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61336 + ... + 63963.

It is an arithmetic number, because the mean of its divisors is an integer number (15067325).

Almost surely, 2^164642886 is an apocalyptic number.

164642886 is an abundant number, since it is smaller than the sum of its proper divisors (196972914).

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

164642886 is a wasteful number, since it uses less digits than its factorization.

164642886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125380 (or 125377 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 164642886 is about 12831.3244055320. The cubic root of 164642886 is about 548.0846722132.

The spelling of 164642886 in words is "one hundred sixty-four million, six hundred forty-two thousand, eight hundred eighty-six".