9680198557 has 2 divisors, whose sum is σ = 9680198558. Its totient is φ = 9680198556.

The previous prime is 9680198509. The next prime is 9680198609. The reversal of 9680198557 is 7558910869.

9680198557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8309051716 + 1371146841 = 91154^2 + 37029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9680198557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9680196557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4840099278 + 4840099279.

It is an arithmetic number, because the mean of its divisors is an integer number (4840099279).

Almost surely, 2^9680198557 is an apocalyptic number.

It is an amenable number.

9680198557 is a deficient number, since it is larger than the sum of its proper divisors (1).

9680198557 is an equidigital number, since it uses as much as digits as its factorization.

9680198557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 58.

The square root of 9680198557 is about 98388.0000660650. Note that the first 4 decimals coincide. The cubic root of 9680198557 is about 2131.2190452506.

The spelling of 9680198557 in words is "nine billion, six hundred eighty million, one hundred ninety-eight thousand, five hundred fifty-seven".