9307139657 has 2 divisors, whose sum is σ = 9307139658. Its totient is φ = 9307139656.

The previous prime is 9307139627. The next prime is 9307139693. The reversal of 9307139657 is 7569317039.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8797689616 + 509450041 = 93796^2 + 22571^2 .

It is a cyclic number.

It is not a de Polignac number, because 9307139657 - 2⁶ = 9307139593 is a prime.

It is not a weakly prime, because it can be changed into another prime (9307139627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4653569828 + 4653569829.

It is an arithmetic number, because the mean of its divisors is an integer number (4653569829).

Almost surely, 2^9307139657 is an apocalyptic number.

It is an amenable number.

9307139657 is a deficient number, since it is larger than the sum of its proper divisors (1).

9307139657 is an equidigital number, since it uses as much as digits as its factorization.

9307139657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1071630, while the sum is 50.

The square root of 9307139657 is about 96473.5179051744. The cubic root of 9307139657 is about 2103.4817266473.

The spelling of 9307139657 in words is "nine billion, three hundred seven million, one hundred thirty-nine thousand, six hundred fifty-seven".