164371265 has 4 divisors (see below), whose sum is σ = 197245524. Its totient is φ = 131497008.

The previous prime is 164371247. The next prime is 164371297. The reversal of 164371265 is 562173461.

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 28858384 + 135512881 = 5372^2 + 11641^2 .

It is a cyclic number.

It is not a de Polignac number, because 164371265 - 2¹⁴ = 164354881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16437122 + ... + 16437131.

It is an arithmetic number, because the mean of its divisors is an integer number (49311381).

Almost surely, 2^164371265 is an apocalyptic number.

It is an amenable number.

164371265 is a deficient number, since it is larger than the sum of its proper divisors (32874259).

164371265 is an equidigital number, since it uses as much as digits as its factorization.

164371265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32874258.

The product of its digits is 30240, while the sum is 35.

The square root of 164371265 is about 12820.7357433183. The cubic root of 164371265 is about 547.7831038658.

The spelling of 164371265 in words is "one hundred sixty-four million, three hundred seventy-one thousand, two hundred sixty-five".