164128885 has 8 divisors (see below), whose sum is σ = 197032320. Its totient is φ = 131251344.

The previous prime is 164128879. The next prime is 164128919. The reversal of 164128885 is 588821461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164128885 - 2²⁵ = 130574453 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12576 + ... + 22054.

It is an arithmetic number, because the mean of its divisors is an integer number (24629040).

Almost surely, 2^164128885 is an apocalyptic number.

It is an amenable number.

164128885 is a deficient number, since it is larger than the sum of its proper divisors (32903435).

164128885 is an equidigital number, since it uses as much as digits as its factorization.

164128885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12947.

The product of its digits is 122880, while the sum is 43.

The square root of 164128885 is about 12811.2796004146. The cubic root of 164128885 is about 547.5137198316.

The spelling of 164128885 in words is "one hundred sixty-four million, one hundred twenty-eight thousand, eight hundred eighty-five".