2815640783 has 2 divisors, whose sum is σ = 2815640784. Its totient is φ = 2815640782.

The previous prime is 2815640777. The next prime is 2815640801. The reversal of 2815640783 is 3870465182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2815640783 - 2²⁸ = 2547205327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2815640713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1407820391 + 1407820392.

It is an arithmetic number, because the mean of its divisors is an integer number (1407820392).

Almost surely, 2^2815640783 is an apocalyptic number.

2815640783 is a deficient number, since it is larger than the sum of its proper divisors (1).

2815640783 is an equidigital number, since it uses as much as digits as its factorization.

2815640783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 2815640783 is about 53062.6119127206. The cubic root of 2815640783 is about 1412.0792860686.

The spelling of 2815640783 in words is "two billion, eight hundred fifteen million, six hundred forty thousand, seven hundred eighty-three".