8258198197 has 2 divisors, whose sum is σ = 8258198198. Its totient is φ = 8258198196.

The previous prime is 8258198177. The next prime is 8258198237. The reversal of 8258198197 is 7918918528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8049857841 + 208340356 = 89721^2 + 14434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8258198197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8258198107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4129099098 + 4129099099.

It is an arithmetic number, because the mean of its divisors is an integer number (4129099099).

Almost surely, 2^8258198197 is an apocalyptic number.

It is an amenable number.

8258198197 is a deficient number, since it is larger than the sum of its proper divisors (1).

8258198197 is an equidigital number, since it uses as much as digits as its factorization.

8258198197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 58.

The square root of 8258198197 is about 90874.6290061203. The cubic root of 8258198197 is about 2021.2890994744.

The spelling of 8258198197 in words is "eight billion, two hundred fifty-eight million, one hundred ninety-eight thousand, one hundred ninety-seven".