15630001613 has 2 divisors, whose sum is σ = 15630001614. Its totient is φ = 15630001612.

The previous prime is 15630001609. The next prime is 15630001643. The reversal of 15630001613 is 31610003651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15594265129 + 35736484 = 124877^2 + 5978^2 .

It is a cyclic number.

It is not a de Polignac number, because 15630001613 - 2² = 15630001609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15630001643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7815000806 + 7815000807.

It is an arithmetic number, because the mean of its divisors is an integer number (7815000807).

Almost surely, 2^15630001613 is an apocalyptic number.

It is an amenable number.

15630001613 is a deficient number, since it is larger than the sum of its proper divisors (1).

15630001613 is an equidigital number, since it uses as much as digits as its factorization.

15630001613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The spelling of 15630001613 in words is "fifteen billion, six hundred thirty million, one thousand, six hundred thirteen".