164442164 has 12 divisors (see below), whose sum is σ = 288501444. Its totient is φ = 82013184.

The previous prime is 164442163. The next prime is 164442181. The reversal of 164442164 is 461244461.

It can be written as a sum of positive squares in 2 ways, for example, as 37699600 + 126742564 = 6140^2 + 11258^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 164442164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164442163) 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, 50189 + ... + 53364.

It is an arithmetic number, because the mean of its divisors is an integer number (24041787).

Almost surely, 2^164442164 is an apocalyptic number.

It is an amenable number.

164442164 is a deficient number, since it is larger than the sum of its proper divisors (124059280).

164442164 is a wasteful number, since it uses less digits than its factorization.

164442164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103954 (or 103952 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 164442164 is about 12823.5004581432. The cubic root of 164442164 is about 547.8618517980.

The spelling of 164442164 in words is "one hundred sixty-four million, four hundred forty-two thousand, one hundred sixty-four".