164036639 has 12 divisors (see below), whose sum is σ = 178253712. Its totient is φ = 150883200.

The previous prime is 164036623. The next prime is 164036659. The reversal of 164036639 is 936630461.

It is not a de Polignac number, because 164036639 - 2⁴ = 164036623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164036659) 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, 50999 + ... + 54119.

It is an arithmetic number, because the mean of its divisors is an integer number (14854476).

Almost surely, 2^164036639 is an apocalyptic number.

164036639 is a deficient number, since it is larger than the sum of its proper divisors (14217073).

164036639 is a wasteful number, since it uses less digits than its factorization.

164036639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458 (or 3445 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 164036639 is about 12807.6789075929. The cubic root of 164036639 is about 547.4111268489.

The spelling of 164036639 in words is "one hundred sixty-four million, thirty-six thousand, six hundred thirty-nine".