9681360197 has 2 divisors, whose sum is σ = 9681360198. Its totient is φ = 9681360196.

The previous prime is 9681360181. The next prime is 9681360257. The reversal of 9681360197 is 7910631869.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9317847841 + 363512356 = 96529^2 + 19066^2 .

It is a cyclic number.

It is not a de Polignac number, because 9681360197 - 2⁴ = 9681360181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9681360127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4840680098 + 4840680099.

It is an arithmetic number, because the mean of its divisors is an integer number (4840680099).

Almost surely, 2^9681360197 is an apocalyptic number.

It is an amenable number.

9681360197 is a deficient number, since it is larger than the sum of its proper divisors (1).

9681360197 is an equidigital number, since it uses as much as digits as its factorization.

9681360197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 9681360197 is about 98393.9032511669. The cubic root of 9681360197 is about 2131.3042917895.

The spelling of 9681360197 in words is "nine billion, six hundred eighty-one million, three hundred sixty thousand, one hundred ninety-seven".