164731569 has 16 divisors (see below), whose sum is σ = 225849600. Its totient is φ = 106749440.

The previous prime is 164731561. The next prime is 164731601. The reversal of 164731569 is 965137461.

164731569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 164731569 - 2³ = 164731561 is a prime.

It is a super-2 number, since 2×164731569² = 54272979650403522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 164731569.

It is not an unprimeable number, because it can be changed into a prime (164731561) 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, 17089 + ... + 24929.

It is an arithmetic number, because the mean of its divisors is an integer number (14115600).

Almost surely, 2^164731569 is an apocalyptic number.

It is an amenable number.

164731569 is a deficient number, since it is larger than the sum of its proper divisors (61118031).

164731569 is a wasteful number, since it uses less digits than its factorization.

164731569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8040.

The product of its digits is 136080, while the sum is 42.

The square root of 164731569 is about 12834.7796630873. The cubic root of 164731569 is about 548.1830610550.

The spelling of 164731569 in words is "one hundred sixty-four million, seven hundred thirty-one thousand, five hundred sixty-nine".