164173423 has 4 divisors (see below), whose sum is σ = 166422448. Its totient is φ = 161924400.

The previous prime is 164173421. The next prime is 164173501. The reversal of 164173423 is 324371461.

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

It is a cyclic number.

It is not a de Polignac number, because 164173423 - 2¹ = 164173421 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 (164173421) 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, 1124403 + ... + 1124548.

It is an arithmetic number, because the mean of its divisors is an integer number (41605612).

Almost surely, 2^164173423 is an apocalyptic number.

164173423 is a deficient number, since it is larger than the sum of its proper divisors (2249025).

164173423 is an equidigital number, since it uses as much as digits as its factorization.

164173423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249024.

The product of its digits is 12096, while the sum is 31.

The square root of 164173423 is about 12813.0177163696. The cubic root of 164173423 is about 547.5632397778.

The spelling of 164173423 in words is "one hundred sixty-four million, one hundred seventy-three thousand, four hundred twenty-three".