2109364657 has 2 divisors, whose sum is σ = 2109364658. Its totient is φ = 2109364656.

The previous prime is 2109364643. The next prime is 2109364687. The reversal of 2109364657 is 7564639012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2107177216 + 2187441 = 45904^2 + 1479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2109364657 is a prime.

It is not a weakly prime, because it can be changed into another prime (2109364687) 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, 1054682328 + 1054682329.

It is an arithmetic number, because the mean of its divisors is an integer number (1054682329).

Almost surely, 2^2109364657 is an apocalyptic number.

It is an amenable number.

2109364657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109364657 is an equidigital number, since it uses as much as digits as its factorization.

2109364657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 2109364657 is about 45927.8200767247. The cubic root of 2109364657 is about 1282.4798638522.

The spelling of 2109364657 in words is "two billion, one hundred nine million, three hundred sixty-four thousand, six hundred fifty-seven".