165504894 has 16 divisors (see below), whose sum is σ = 350481168. Its totient is φ = 51923072.

The previous prime is 165504883. The next prime is 165504901. The reversal of 165504894 is 498405561.

165504894 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 811197 + ... + 811400.

It is an arithmetic number, because the mean of its divisors is an integer number (21905073).

Almost surely, 2^165504894 is an apocalyptic number.

165504894 is an abundant number, since it is smaller than the sum of its proper divisors (184976274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165504894 is a wasteful number, since it uses less digits than its factorization.

165504894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622619.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 165504894 is about 12864.8705395740. The cubic root of 165504894 is about 549.0395292057.

The spelling of 165504894 in words is "one hundred sixty-five million, five hundred four thousand, eight hundred ninety-four".