2057307817 has 2 divisors, whose sum is σ = 2057307818. Its totient is φ = 2057307816.

The previous prime is 2057307793. The next prime is 2057307851. The reversal of 2057307817 is 7187037502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2051999401 + 5308416 = 45299^2 + 2304^2 .

It is a cyclic number.

It is not a de Polignac number, because 2057307817 - 2¹⁵ = 2057275049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2057307817.

It is not a weakly prime, because it can be changed into another prime (2057307617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028653908 + 1028653909.

It is an arithmetic number, because the mean of its divisors is an integer number (1028653909).

Almost surely, 2^2057307817 is an apocalyptic number.

It is an amenable number.

2057307817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2057307817 is an equidigital number, since it uses as much as digits as its factorization.

2057307817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 2057307817 is about 45357.5552361456. Note that the first 3 decimals coincide. The cubic root of 2057307817 is about 1271.8417935514.

The spelling of 2057307817 in words is "two billion, fifty-seven million, three hundred seven thousand, eight hundred seventeen".