164864165 has 8 divisors (see below), whose sum is σ = 197905920. Its totient is φ = 131845392.

The previous prime is 164864143. The next prime is 164864171. The reversal of 164864165 is 561468461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164864165 - 2¹⁸ = 164602021 is a prime.

It is a super-2 number, since 2×164864165² = 54360385802294450, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 25316 + ... + 31154.

It is an arithmetic number, because the mean of its divisors is an integer number (24738240).

Almost surely, 2^164864165 is an apocalyptic number.

It is an amenable number.

164864165 is a deficient number, since it is larger than the sum of its proper divisors (33041755).

164864165 is an equidigital number, since it uses as much as digits as its factorization.

164864165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11491.

The product of its digits is 138240, while the sum is 41.

The square root of 164864165 is about 12839.9441198161. The cubic root of 164864165 is about 548.3301030740.

The spelling of 164864165 in words is "one hundred sixty-four million, eight hundred sixty-four thousand, one hundred sixty-five".