2857253813 has 2 divisors, whose sum is σ = 2857253814. Its totient is φ = 2857253812.

The previous prime is 2857253807. The next prime is 2857253831. The reversal of 2857253813 is 3183527582.

Together with next prime (2857253831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2791854244 + 65399569 = 52838^2 + 8087^2 .

It is a cyclic number.

It is not a de Polignac number, because 2857253813 - 2⁸ = 2857253557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2857255813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428626906 + 1428626907.

It is an arithmetic number, because the mean of its divisors is an integer number (1428626907).

Almost surely, 2^2857253813 is an apocalyptic number.

It is an amenable number.

2857253813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2857253813 is an equidigital number, since it uses as much as digits as its factorization.

2857253813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 44.

The square root of 2857253813 is about 53453.2862694147. The cubic root of 2857253813 is about 1419.0017802600.

The spelling of 2857253813 in words is "two billion, eight hundred fifty-seven million, two hundred fifty-three thousand, eight hundred thirteen".