9812631617 has 2 divisors, whose sum is σ = 9812631618. Its totient is φ = 9812631616.

The previous prime is 9812631607. The next prime is 9812631623. The reversal of 9812631617 is 7161362189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9778045456 + 34586161 = 98884^2 + 5881^2 .

It is an emirp because it is prime and its reverse (7161362189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9812631617 - 2⁴ = 9812631601 is a prime.

It is not a weakly prime, because it can be changed into another prime (9812631607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4906315808 + 4906315809.

It is an arithmetic number, because the mean of its divisors is an integer number (4906315809).

Almost surely, 2^9812631617 is an apocalyptic number.

It is an amenable number.

9812631617 is a deficient number, since it is larger than the sum of its proper divisors (1).

9812631617 is an equidigital number, since it uses as much as digits as its factorization.

9812631617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 9812631617 is about 99058.7281212514. The cubic root of 9812631617 is about 2140.8939998538.

The spelling of 9812631617 in words is "nine billion, eight hundred twelve million, six hundred thirty-one thousand, six hundred seventeen".