2813565438 has 48 divisors (see below), whose sum is σ = 6232571280. Its totient is φ = 917059968.

The previous prime is 2813565437. The next prime is 2813565479. The reversal of 2813565438 is 8345653182.

2813565438 is a `hidden beast` number, since 2 + 81 + 3 + 565 + 4 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2813565393 and 2813565402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2813565437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156708 + ... + 173736.

It is an arithmetic number, because the mean of its divisors is an integer number (129845235).

Almost surely, 2^2813565438 is an apocalyptic number.

2813565438 is an abundant number, since it is smaller than the sum of its proper divisors (3419005842).

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

2813565438 is a wasteful number, since it uses less digits than its factorization.

2813565438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17241 (or 17238 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 2813565438 is about 53043.0526836456. The cubic root of 2813565438 is about 1411.7322635823.

The spelling of 2813565438 in words is "two billion, eight hundred thirteen million, five hundred sixty-five thousand, four hundred thirty-eight".