164045637 has 24 divisors (see below), whose sum is σ = 282582144. Its totient is φ = 89663904.

The previous prime is 164045621. The next prime is 164045641. The reversal of 164045637 is 736540461.

It is a happy number.

164045637 is a `hidden beast` number, since 1 + 640 + 4 + 5 + 6 + 3 + 7 = 666.

It is not a de Polignac number, because 164045637 - 2⁴ = 164045621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164045617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55158 + ... + 58055.

It is an arithmetic number, because the mean of its divisors is an integer number (11774256).

Almost surely, 2^164045637 is an apocalyptic number.

It is an amenable number.

164045637 is a deficient number, since it is larger than the sum of its proper divisors (118536507).

164045637 is a wasteful number, since it uses less digits than its factorization.

164045637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113249 (or 113246 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 164045637 is about 12808.0301764167. The cubic root of 164045637 is about 547.4211358227.

The spelling of 164045637 in words is "one hundred sixty-four million, forty-five thousand, six hundred thirty-seven".