2813265391 has 4 divisors (see below), whose sum is σ = 2813386392. Its totient is φ = 2813144392.

The previous prime is 2813265311. The next prime is 2813265421. The reversal of 2813265391 is 1935623182.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2813265391 - 2²⁵ = 2779710959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2813265311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13405 + ... + 76198.

It is an arithmetic number, because the mean of its divisors is an integer number (703346598).

Almost surely, 2^2813265391 is an apocalyptic number.

2813265391 is a deficient number, since it is larger than the sum of its proper divisors (121001).

2813265391 is an equidigital number, since it uses as much as digits as its factorization.

2813265391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121000.

The product of its digits is 77760, while the sum is 40.

The square root of 2813265391 is about 53040.2242736586. The cubic root of 2813265391 is about 1411.6820780202.

The spelling of 2813265391 in words is "two billion, eight hundred thirteen million, two hundred sixty-five thousand, three hundred ninety-one".