2113644136 has 64 divisors (see below), whose sum is σ = 4351294080. Its totient is φ = 958494720.

The previous prime is 2113644107. The next prime is 2113644157. The reversal of 2113644136 is 6314463112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2113644098 and 2113644107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460525 + ... + 465091.

It is an arithmetic number, because the mean of its divisors is an integer number (67988970).

Almost surely, 2^2113644136 is an apocalyptic number.

It is an amenable number.

2113644136 is an abundant number, since it is smaller than the sum of its proper divisors (2237649944).

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

2113644136 is a wasteful number, since it uses less digits than its factorization.

2113644136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714 (or 4710 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 2113644136 is about 45974.3856511427. The cubic root of 2113644136 is about 1283.3465763668.

The spelling of 2113644136 in words is "two billion, one hundred thirteen million, six hundred forty-four thousand, one hundred thirty-six".