164636144 has 20 divisors (see below), whose sum is σ = 322828296. Its totient is φ = 81325632.

The previous prime is 164636123. The next prime is 164636183. The reversal of 164636144 is 441636461.

It is a happy number.

It is a super-2 number, since 2×164636144² = 54210119822377472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60659 + ... + 63314.

Almost surely, 2^164636144 is an apocalyptic number.

It is an amenable number.

164636144 is a deficient number, since it is larger than the sum of its proper divisors (158192152).

164636144 is a wasteful number, since it uses less digits than its factorization.

164636144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124064 (or 124058 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 164636144 is about 12831.0616863921. The cubic root of 164636144 is about 548.0771908953.

The spelling of 164636144 in words is "one hundred sixty-four million, six hundred thirty-six thousand, one hundred forty-four".