164645037 has 6 divisors (see below), whose sum is σ = 237820622. Its totient is φ = 109763352.

The previous prime is 164645011. The next prime is 164645059. The reversal of 164645037 is 730546461.

It is a happy number.

164645037 is a `hidden beast` number, since 1 + 6 + 4 + 645 + 0 + 3 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 129823236 + 34821801 = 11394^2 + 5901^2 .

It is not a de Polignac number, because 164645037 - 2²² = 160450733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164644992 and 164645010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164645077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9146938 + ... + 9146955.

Almost surely, 2^164645037 is an apocalyptic number.

It is an amenable number.

164645037 is a deficient number, since it is larger than the sum of its proper divisors (73175585).

164645037 is a wasteful number, since it uses less digits than its factorization.

164645037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18293899 (or 18293896 counting only the distinct ones).

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

The square root of 164645037 is about 12831.4082235739. The cubic root of 164645037 is about 548.0870590457.

The spelling of 164645037 in words is "one hundred sixty-four million, six hundred forty-five thousand, thirty-seven".