164355904 has 14 divisors (see below), whose sum is σ = 326143874. Its totient is φ = 82177920.

The previous prime is 164355859. The next prime is 164355913. The reversal of 164355904 is 409553461.

It can be written as a sum of positive squares in only one way, i.e., 162613504 + 1742400 = 12752^2 + 1320^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283967 + ... + 1284094.

It is an arithmetic number, because the mean of its divisors is an integer number (23295991).

Almost surely, 2^164355904 is an apocalyptic number.

It is an amenable number.

164355904 is a deficient number, since it is larger than the sum of its proper divisors (161787970).

164355904 is an equidigital number, since it uses as much as digits as its factorization.

164355904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568073 (or 2568063 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 164355904 is about 12820.1366607381. The cubic root of 164355904 is about 547.7660393293.

The spelling of 164355904 in words is "one hundred sixty-four million, three hundred fifty-five thousand, nine hundred four".