2135861164 has 12 divisors (see below), whose sum is σ = 3957625224. Its totient is φ = 1005111104.

The previous prime is 2135861141. The next prime is 2135861171. The reversal of 2135861164 is 4611685312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15704794 + ... + 15704929.

It is an arithmetic number, because the mean of its divisors is an integer number (329802102).

Almost surely, 2^2135861164 is an apocalyptic number.

It is an amenable number.

2135861164 is a deficient number, since it is larger than the sum of its proper divisors (1821764060).

2135861164 is a wasteful number, since it uses less digits than its factorization.

2135861164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31409744 (or 31409742 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 2135861164 is about 46215.3780034308. The cubic root of 2135861164 is about 1287.8274357948.

The spelling of 2135861164 in words is "two billion, one hundred thirty-five million, eight hundred sixty-one thousand, one hundred sixty-four".