7990036513 has 2 divisors, whose sum is σ = 7990036514. Its totient is φ = 7990036512.

The previous prime is 7990036477. The next prime is 7990036531. The reversal of 7990036513 is 3156300997.

It is a happy number.

Together with next prime (7990036531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5090537104 + 2899499409 = 71348^2 + 53847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7990036513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7990036513.

It is not a weakly prime, because it can be changed into another prime (7990036553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3995018256 + 3995018257.

It is an arithmetic number, because the mean of its divisors is an integer number (3995018257).

Almost surely, 2^7990036513 is an apocalyptic number.

It is an amenable number.

7990036513 is a deficient number, since it is larger than the sum of its proper divisors (1).

7990036513 is an equidigital number, since it uses as much as digits as its factorization.

7990036513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153090, while the sum is 43.

The square root of 7990036513 is about 89387.0041616789. The cubic root of 7990036513 is about 1999.1693644867.

The spelling of 7990036513 in words is "seven billion, nine hundred ninety million, thirty-six thousand, five hundred thirteen".