2135138764 has 24 divisors (see below), whose sum is σ = 4207666176. Its totient is φ = 939210000.

The previous prime is 2135138743. The next prime is 2135138827. The reversal of 2135138764 is 4678315312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781312 + ... + 784039.

It is an arithmetic number, because the mean of its divisors is an integer number (175319424).

Almost surely, 2^2135138764 is an apocalyptic number.

It is an amenable number.

2135138764 is a deficient number, since it is larger than the sum of its proper divisors (2072527412).

2135138764 is a wasteful number, since it uses less digits than its factorization.

2135138764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565397 (or 1565395 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 2135138764 is about 46207.5617621185. The cubic root of 2135138764 is about 1287.6822279412.

The spelling of 2135138764 in words is "two billion, one hundred thirty-five million, one hundred thirty-eight thousand, seven hundred sixty-four".