165133885 has 8 divisors (see below), whose sum is σ = 226469376. Its totient is φ = 113234640.

The previous prime is 165133879. The next prime is 165133907. The reversal of 165133885 is 588331561.

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

It is not a de Polignac number, because 165133885 - 2³ = 165133877 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 7 ways as a sum of consecutive naturals, for example, 2359021 + ... + 2359090.

It is an arithmetic number, because the mean of its divisors is an integer number (28308672).

Almost surely, 2^165133885 is an apocalyptic number.

It is an amenable number.

165133885 is a deficient number, since it is larger than the sum of its proper divisors (61335491).

165133885 is an equidigital number, since it uses as much as digits as its factorization.

165133885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718123.

The product of its digits is 86400, while the sum is 40.

The square root of 165133885 is about 12850.4429884732. The cubic root of 165133885 is about 548.6289653031.

The spelling of 165133885 in words is "one hundred sixty-five million, one hundred thirty-three thousand, eight hundred eighty-five".