2309349785917 has 2 divisors, whose sum is σ = 2309349785918. Its totient is φ = 2309349785916.

The previous prime is 2309349785881. The next prime is 2309349785921. The reversal of 2309349785917 is 7195879439032.

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., 2134202513881 + 175147272036 = 1460891^2 + 418506^2 .

It is a cyclic number.

It is not a de Polignac number, because 2309349785917 - 2¹¹ = 2309349783869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2309349782917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1154674892958 + 1154674892959.

It is an arithmetic number, because the mean of its divisors is an integer number (1154674892959).

Almost surely, 2^{2309349785917} is an apocalyptic number.

It is an amenable number.

2309349785917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2309349785917 is an equidigital number, since it uses as much as digits as its factorization.

2309349785917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102876480, while the sum is 67.

The spelling of 2309349785917 in words is "two trillion, three hundred nine billion, three hundred forty-nine million, seven hundred eighty-five thousand, nine hundred seventeen".