2813815915 has 16 divisors (see below), whose sum is σ = 3525677280. Its totient is φ = 2153105920.

The previous prime is 2813815889. The next prime is 2813815919. The reversal of 2813815915 is 5195183182.

It is not a de Polignac number, because 2813815915 - 2²⁵ = 2780261483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2813815919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75166 + ... + 106195.

It is an arithmetic number, because the mean of its divisors is an integer number (220354830).

Almost surely, 2^2813815915 is an apocalyptic number.

2813815915 is a deficient number, since it is larger than the sum of its proper divisors (711861365).

2813815915 is a wasteful number, since it uses less digits than its factorization.

2813815915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181502.

The product of its digits is 86400, while the sum is 43.

The square root of 2813815915 is about 53045.4137037313. The cubic root of 2813815915 is about 1411.7741553832.

It can be divided in two parts, 281381 and 5915, that added together give a square (287296 = 536²).

The spelling of 2813815915 in words is "two billion, eight hundred thirteen million, eight hundred fifteen thousand, nine hundred fifteen".