2133165644 has 96 divisors (see below), whose sum is σ = 4340952000. Its totient is φ = 913554432.

The previous prime is 2133165607. The next prime is 2133165719. The reversal of 2133165644 is 4465613312.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10828154 + ... + 10828350.

It is an arithmetic number, because the mean of its divisors is an integer number (45218250).

Almost surely, 2^2133165644 is an apocalyptic number.

It is an amenable number.

2133165644 is an abundant number, since it is smaller than the sum of its proper divisors (2207786356).

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

2133165644 is a wasteful number, since it uses less digits than its factorization.

2133165644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 264 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 2133165644 is about 46186.2062092136. The cubic root of 2133165644 is about 1287.2854489505.

Adding to 2133165644 its reverse (4465613312), we get a palindrome (6598778956).

The spelling of 2133165644 in words is "two billion, one hundred thirty-three million, one hundred sixty-five thousand, six hundred forty-four".