164501645 has 32 divisors (see below), whose sum is σ = 251375616. Its totient is φ = 100353600.

The previous prime is 164501633. The next prime is 164501651. The reversal of 164501645 is 546105461.

It is not a de Polignac number, because 164501645 - 2⁶ = 164501581 is a prime.

It is a super-3 number, since 3×164501645³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 13550 + ... + 22640.

It is an arithmetic number, because the mean of its divisors is an integer number (7855488).

Almost surely, 2^164501645 is an apocalyptic number.

It is an amenable number.

164501645 is a deficient number, since it is larger than the sum of its proper divisors (86873971).

164501645 is a wasteful number, since it uses less digits than its factorization.

164501645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9161.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 164501645 is about 12825.8194669970. The cubic root of 164501645 is about 547.9279002325.

The spelling of 164501645 in words is "one hundred sixty-four million, five hundred one thousand, six hundred forty-five".