2165565284 has 12 divisors (see below), whose sum is σ = 3835399344. Its totient is φ = 1069736904.

The previous prime is 2165565271. The next prime is 2165565287. The reversal of 2165565284 is 4825655612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2165565287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3261062 + ... + 3261725.

It is an arithmetic number, because the mean of its divisors is an integer number (319616612).

Almost surely, 2^2165565284 is an apocalyptic number.

It is an amenable number.

2165565284 is a deficient number, since it is larger than the sum of its proper divisors (1669834060).

2165565284 is a wasteful number, since it uses less digits than its factorization.

2165565284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6522874 (or 6522872 counting only the distinct ones).

The product of its digits is 576000, while the sum is 44.

The square root of 2165565284 is about 46535.6345610544. The cubic root of 2165565284 is about 1293.7700508799.

The spelling of 2165565284 in words is "two billion, one hundred sixty-five million, five hundred sixty-five thousand, two hundred eighty-four".