2165816713 has 2 divisors, whose sum is σ = 2165816714. Its totient is φ = 2165816712.

The previous prime is 2165816687. The next prime is 2165816717. The reversal of 2165816713 is 3176185612.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1446128784 + 719687929 = 38028^2 + 26827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2165816713 is a prime.

It is not a weakly prime, because it can be changed into another prime (2165816717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082908356 + 1082908357.

It is an arithmetic number, because the mean of its divisors is an integer number (1082908357).

Almost surely, 2^2165816713 is an apocalyptic number.

It is an amenable number.

2165816713 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165816713 is an equidigital number, since it uses as much as digits as its factorization.

2165816713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 2165816713 is about 46538.3359500530. The cubic root of 2165816713 is about 1293.8201192114.

The spelling of 2165816713 in words is "two billion, one hundred sixty-five million, eight hundred sixteen thousand, seven hundred thirteen".