2315641649 has 2 divisors, whose sum is σ = 2315641650. Its totient is φ = 2315641648.

The previous prime is 2315641607. The next prime is 2315641667. The reversal of 2315641649 is 9461465132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1300900624 + 1014741025 = 36068^2 + 31855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2315641649 is a prime.

It is not a weakly prime, because it can be changed into another prime (2315649649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157820824 + 1157820825.

It is an arithmetic number, because the mean of its divisors is an integer number (1157820825).

Almost surely, 2^2315641649 is an apocalyptic number.

It is an amenable number.

2315641649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315641649 is an equidigital number, since it uses as much as digits as its factorization.

2315641649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 2315641649 is about 48121.1143782020. The cubic root of 2315641649 is about 1322.9916933190.

The spelling of 2315641649 in words is "two billion, three hundred fifteen million, six hundred forty-one thousand, six hundred forty-nine".