164144889 has 12 divisors (see below), whose sum is σ = 242612656. Its totient is φ = 106884792.

The previous prime is 164144887. The next prime is 164144909. The reversal of 164144889 is 988441461.

164144889 is a `hidden beast` number, since 164 + 1 + 4 + 488 + 9 = 666.

It is not a de Polignac number, because 164144889 - 2¹ = 164144887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164144887) 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, 211687 + ... + 212460.

Almost surely, 2^164144889 is an apocalyptic number.

It is an amenable number.

164144889 is a deficient number, since it is larger than the sum of its proper divisors (78467767).

164144889 is a wasteful number, since it uses less digits than its factorization.

164144889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424196 (or 424193 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 164144889 is about 12811.9041910248. The cubic root of 164144889 is about 547.5315150434.

The spelling of 164144889 in words is "one hundred sixty-four million, one hundred forty-four thousand, eight hundred eighty-nine".