8198983657 has 2 divisors, whose sum is σ = 8198983658. Its totient is φ = 8198983656.

The previous prime is 8198983603. The next prime is 8198983693. The reversal of 8198983657 is 7563898918.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4632027481 + 3566956176 = 68059^2 + 59724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8198983657 is a prime.

It is not a weakly prime, because it can be changed into another prime (8198983357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4099491828 + 4099491829.

It is an arithmetic number, because the mean of its divisors is an integer number (4099491829).

Almost surely, 2^8198983657 is an apocalyptic number.

It is an amenable number.

8198983657 is a deficient number, since it is larger than the sum of its proper divisors (1).

8198983657 is an equidigital number, since it uses as much as digits as its factorization.

8198983657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 64.

The square root of 8198983657 is about 90548.2393920500. The cubic root of 8198983657 is about 2016.4463593441.

The spelling of 8198983657 in words is "eight billion, one hundred ninety-eight million, nine hundred eighty-three thousand, six hundred fifty-seven".