2566847438 has 16 divisors (see below), whose sum is σ = 3864127680. Its totient is φ = 1278813696.

The previous prime is 2566847417. The next prime is 2566847453. The reversal of 2566847438 is 8347486652.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2566847438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847595 + ... + 850617.

It is an arithmetic number, because the mean of its divisors is an integer number (241507980).

Almost surely, 2^2566847438 is an apocalyptic number.

2566847438 is a deficient number, since it is larger than the sum of its proper divisors (1297280242).

2566847438 is a wasteful number, since it uses less digits than its factorization.

2566847438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411.

The product of its digits is 7741440, while the sum is 53.

The square root of 2566847438 is about 50664.0645625674. The cubic root of 2566847438 is about 1369.1993542304.

The spelling of 2566847438 in words is "two billion, five hundred sixty-six million, eight hundred forty-seven thousand, four hundred thirty-eight".