164273975 has 48 divisors (see below), whose sum is σ = 225387360. Its totient is φ = 118272000.

The previous prime is 164273959. The next prime is 164273987. The reversal of 164273975 is 579372461.

164273975 = 1225² + 1226² + ... + 1325².

It is not a de Polignac number, because 164273975 - 2⁴ = 164273959 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1626425 + ... + 1626525.

It is an arithmetic number, because the mean of its divisors is an integer number (4695570).

Almost surely, 2^164273975 is an apocalyptic number.

164273975 is a deficient number, since it is larger than the sum of its proper divisors (61113385).

164273975 is a wasteful number, since it uses less digits than its factorization.

164273975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 255 counting only the distinct ones).

The product of its digits is 317520, while the sum is 44.

The square root of 164273975 is about 12816.9409376809. The cubic root of 164273975 is about 547.6750064309.

It can be divided in two parts, 16427 and 3975, that added together give a palindrome (20402).

The spelling of 164273975 in words is "one hundred sixty-four million, two hundred seventy-three thousand, nine hundred seventy-five".