164494239 has 16 divisors (see below), whose sum is σ = 269939712. Its totient is φ = 86766048.

The previous prime is 164494223. The next prime is 164494241. The reversal of 164494239 is 932494461.

It is not a de Polignac number, because 164494239 - 2⁴ = 164494223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164494239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164494289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300999 + ... + 301544.

It is an arithmetic number, because the mean of its divisors is an integer number (16871232).

Almost surely, 2^164494239 is an apocalyptic number.

164494239 is a deficient number, since it is larger than the sum of its proper divisors (105445473).

164494239 is a wasteful number, since it uses less digits than its factorization.

164494239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602566.

The product of its digits is 186624, while the sum is 42.

The square root of 164494239 is about 12825.5307492517. The cubic root of 164494239 is about 547.9196773868.

The spelling of 164494239 in words is "one hundred sixty-four million, four hundred ninety-four thousand, two hundred thirty-nine".