900165885 has 16 divisors (see below), whose sum is σ = 1444353984. Its totient is φ = 478725632.

The previous prime is 900165853. The next prime is 900165923. The reversal of 900165885 is 588561009.

It is a cyclic number.

It is not a de Polignac number, because 900165885 - 2⁵ = 900165853 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79707 + ... + 90296.

It is an arithmetic number, because the mean of its divisors is an integer number (90272124).

Almost surely, 2^900165885 is an apocalyptic number.

It is an amenable number.

900165885 is a deficient number, since it is larger than the sum of its proper divisors (544188099).

900165885 is a wasteful number, since it uses less digits than its factorization.

900165885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170364.

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 900165885 is about 30002.7646226144. The cubic root of 900165885 is about 965.5486995566.

The spelling of 900165885 in words is "nine hundred million, one hundred sixty-five thousand, eight hundred eighty-five".