164323165 has 4 divisors (see below), whose sum is σ = 197187804. Its totient is φ = 131458528.

The previous prime is 164323129. The next prime is 164323169. The reversal of 164323165 is 561323461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50324836 + 113998329 = 7094^2 + 10677^2 .

It is a cyclic number.

It is not a de Polignac number, because 164323165 - 2¹¹ = 164321117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164323169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16432312 + ... + 16432321.

It is an arithmetic number, because the mean of its divisors is an integer number (49296951).

Almost surely, 2^164323165 is an apocalyptic number.

It is an amenable number.

164323165 is a deficient number, since it is larger than the sum of its proper divisors (32864639).

164323165 is an equidigital number, since it uses as much as digits as its factorization.

164323165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32864638.

The product of its digits is 12960, while the sum is 31.

The square root of 164323165 is about 12818.8597386819. The cubic root of 164323165 is about 547.7296660223.

The spelling of 164323165 in words is "one hundred sixty-four million, three hundred twenty-three thousand, one hundred sixty-five".