2957198681 has 2 divisors, whose sum is σ = 2957198682. Its totient is φ = 2957198680.

The previous prime is 2957198669. The next prime is 2957198723. The reversal of 2957198681 is 1868917592.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2845262281 + 111936400 = 53341^2 + 10580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2957198681 is a prime.

It is a super-2 number, since 2×2957198681² = 17490048077816279522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2957198581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1478599340 + 1478599341.

It is an arithmetic number, because the mean of its divisors is an integer number (1478599341).

Almost surely, 2^2957198681 is an apocalyptic number.

It is an amenable number.

2957198681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2957198681 is an equidigital number, since it uses as much as digits as its factorization.

2957198681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 56.

The square root of 2957198681 is about 54380.1313073075. The cubic root of 2957198681 is about 1435.3577810233.

The spelling of 2957198681 in words is "two billion, nine hundred fifty-seven million, one hundred ninety-eight thousand, six hundred eighty-one".