9817936129 has 2 divisors, whose sum is σ = 9817936130. Its totient is φ = 9817936128.

The previous prime is 9817936103. The next prime is 9817936151. The reversal of 9817936129 is 9216397189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9653455504 + 164480625 = 98252^2 + 12825^2 .

It is a cyclic number.

It is not a de Polignac number, because 9817936129 - 2²³ = 9809547521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9817936129.

It is not a weakly prime, because it can be changed into another prime (9817936229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4908968064 + 4908968065.

It is an arithmetic number, because the mean of its divisors is an integer number (4908968065).

Almost surely, 2^9817936129 is an apocalyptic number.

It is an amenable number.

9817936129 is a deficient number, since it is larger than the sum of its proper divisors (1).

9817936129 is an equidigital number, since it uses as much as digits as its factorization.

9817936129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 55.

The square root of 9817936129 is about 99085.4990853858. The cubic root of 9817936129 is about 2141.2797051578.

The spelling of 9817936129 in words is "nine billion, eight hundred seventeen million, nine hundred thirty-six thousand, one hundred twenty-nine".