164819913 has 16 divisors (see below), whose sum is σ = 233171136. Its totient is φ = 103201280.

The previous prime is 164819891. The next prime is 164819951. The reversal of 164819913 is 319918461.

It is a cyclic number.

It is not a de Polignac number, because 164819913 - 2²⁰ = 163771337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164819113) 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, 23470 + ... + 29672.

It is an arithmetic number, because the mean of its divisors is an integer number (14573196).

Almost surely, 2^164819913 is an apocalyptic number.

It is an amenable number.

164819913 is a deficient number, since it is larger than the sum of its proper divisors (68351223).

164819913 is a wasteful number, since it uses less digits than its factorization.

164819913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6744.

The product of its digits is 46656, while the sum is 42.

The square root of 164819913 is about 12838.2207879441. The cubic root of 164819913 is about 548.2810386921.

The spelling of 164819913 in words is "one hundred sixty-four million, eight hundred nineteen thousand, nine hundred thirteen".