2538967815 has 64 divisors (see below), whose sum is σ = 4957977600. Its totient is φ = 1227042432.

The previous prime is 2538967801. The next prime is 2538967909. The reversal of 2538967815 is 5187698352.

2538967815 is a `hidden beast` number, since 2 + 538 + 96 + 7 + 8 + 15 = 666.

2538967815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2538967815 - 2⁷ = 2538967687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37477 + ... + 80513.

It is an arithmetic number, because the mean of its divisors is an integer number (77468400).

Almost surely, 2^2538967815 is an apocalyptic number.

2538967815 is a deficient number, since it is larger than the sum of its proper divisors (2419009785).

2538967815 is a wasteful number, since it uses less digits than its factorization.

2538967815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43093 (or 43087 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 2538967815 is about 50388.1713797990. The cubic root of 2538967815 is about 1364.2241454970.

The spelling of 2538967815 in words is "two billion, five hundred thirty-eight million, nine hundred sixty-seven thousand, eight hundred fifteen".