9639670013 has 2 divisors, whose sum is σ = 9639670014. Its totient is φ = 9639670012.

The previous prime is 9639670009. The next prime is 9639670031. The reversal of 9639670013 is 3100769369.

It is a happy number.

Together with next prime (9639670031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9071229049 + 568440964 = 95243^2 + 23842^2 .

It is an emirp because it is prime and its reverse (3100769369) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9639670013 - 2² = 9639670009 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 (9639670003) 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, 4819835006 + 4819835007.

It is an arithmetic number, because the mean of its divisors is an integer number (4819835007).

Almost surely, 2^9639670013 is an apocalyptic number.

It is an amenable number.

9639670013 is a deficient number, since it is larger than the sum of its proper divisors (1).

9639670013 is an equidigital number, since it uses as much as digits as its factorization.

9639670013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 9639670013 is about 98181.8211941498. The cubic root of 9639670013 is about 2128.2405929244.

The spelling of 9639670013 in words is "nine billion, six hundred thirty-nine million, six hundred seventy thousand, thirteen".