164468642 has 32 divisors (see below), whose sum is σ = 282692592. Its totient is φ = 71092224.

The previous prime is 164468639. The next prime is 164468669. The reversal of 164468642 is 246864461.

It can be written as a sum of positive squares in 8 ways, for example, as 27133681 + 137334961 = 5209^2 + 11719^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 164468642.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102188 + ... + 103784.

Almost surely, 2^164468642 is an apocalyptic number.

164468642 is a deficient number, since it is larger than the sum of its proper divisors (118223950).

164468642 is a wasteful number, since it uses less digits than its factorization.

164468642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862.

The product of its digits is 221184, while the sum is 41.

The square root of 164468642 is about 12824.5328180016. The cubic root of 164468642 is about 547.8912552617.

The spelling of 164468642 in words is "one hundred sixty-four million, four hundred sixty-eight thousand, six hundred forty-two".