164144173 has 12 divisors (see below), whose sum is σ = 177934620. Its totient is φ = 151289856.

The previous prime is 164144161. The next prime is 164144209. The reversal of 164144173 is 371441461.

It can be written as a sum of positive squares in 2 ways, for example, as 140114569 + 24029604 = 11837^2 + 4902^2 .

It is not a de Polignac number, because 164144173 - 2²¹ = 162047021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164144873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7213 + ... + 19501.

It is an arithmetic number, because the mean of its divisors is an integer number (14827885).

Almost surely, 2^164144173 is an apocalyptic number.

It is an amenable number.

164144173 is a deficient number, since it is larger than the sum of its proper divisors (13790447).

164144173 is a wasteful number, since it uses less digits than its factorization.

164144173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12364 (or 12345 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 164144173 is about 12811.8762482316. The cubic root of 164144173 is about 547.5307189314.

The spelling of 164144173 in words is "one hundred sixty-four million, one hundred forty-four thousand, one hundred seventy-three".