164642337 has 12 divisors (see below), whose sum is σ = 238336384. Its totient is φ = 109521720.

The previous prime is 164642329. The next prime is 164642339. The reversal of 164642337 is 733246461.

It is a happy number.

164642337 is a `hidden beast` number, since 1 + 6 + 4 + 642 + 3 + 3 + 7 = 666.

It is not a de Polignac number, because 164642337 - 2³ = 164642329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164642339) 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, 15589 + ... + 23922.

Almost surely, 2^164642337 is an apocalyptic number.

It is an amenable number.

164642337 is a deficient number, since it is larger than the sum of its proper divisors (73694047).

164642337 is a wasteful number, since it uses less digits than its factorization.

164642337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39980 (or 39977 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 164642337 is about 12831.3030125549. The cubic root of 164642337 is about 548.0840630183.

Adding to 164642337 its reverse (733246461), we get a palindrome (897888798).

The spelling of 164642337 in words is "one hundred sixty-four million, six hundred forty-two thousand, three hundred thirty-seven".