115965013 has 2 divisors, whose sum is σ = 115965014. Its totient is φ = 115965012.

The previous prime is 115965001. The next prime is 115965019. The reversal of 115965013 is 310569511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107682129 + 8282884 = 10377^2 + 2878^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115965013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115965019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57982506 + 57982507.

It is an arithmetic number, because the mean of its divisors is an integer number (57982507).

Almost surely, 2^115965013 is an apocalyptic number.

It is an amenable number.

115965013 is a deficient number, since it is larger than the sum of its proper divisors (1).

115965013 is an equidigital number, since it uses as much as digits as its factorization.

115965013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 115965013 is about 10768.7052610794. The cubic root of 115965013 is about 487.6508591187.

The spelling of 115965013 in words is "one hundred fifteen million, nine hundred sixty-five thousand, thirteen".