2315649649 has 2 divisors, whose sum is σ = 2315649650. Its totient is φ = 2315649648.

The previous prime is 2315649607. The next prime is 2315649653. The reversal of 2315649649 is 9469465132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2290579600 + 25070049 = 47860^2 + 5007^2 .

It is a cyclic number.

It is not a de Polignac number, because 2315649649 - 2⁷ = 2315649521 is a prime.

It is not a weakly prime, because it can be changed into another prime (2315649949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157824824 + 1157824825.

It is an arithmetic number, because the mean of its divisors is an integer number (1157824825).

Almost surely, 2^2315649649 is an apocalyptic number.

It is an amenable number.

2315649649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315649649 is an equidigital number, since it uses as much as digits as its factorization.

2315649649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 49.

The square root of 2315649649 is about 48121.1975017247. The cubic root of 2315649649 is about 1322.9932168595.

The spelling of 2315649649 in words is "two billion, three hundred fifteen million, six hundred forty-nine thousand, six hundred forty-nine".