615448013 has 2 divisors, whose sum is σ = 615448014. Its totient is φ = 615448012.

The previous prime is 615447967. The next prime is 615448037. The reversal of 615448013 is 310844516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 584333929 + 31114084 = 24173^2 + 5578^2 .

It is a cyclic number.

It is not a de Polignac number, because 615448013 - 2¹⁰ = 615446989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (615148013) 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, 307724006 + 307724007.

It is an arithmetic number, because the mean of its divisors is an integer number (307724007).

Almost surely, 2^615448013 is an apocalyptic number.

It is an amenable number.

615448013 is a deficient number, since it is larger than the sum of its proper divisors (1).

615448013 is an equidigital number, since it uses as much as digits as its factorization.

615448013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 615448013 is about 24808.2247047224. The cubic root of 615448013 is about 850.6099488246.

The spelling of 615448013 in words is "six hundred fifteen million, four hundred forty-eight thousand, thirteen".