7949198357 has 2 divisors, whose sum is σ = 7949198358. Its totient is φ = 7949198356.

The previous prime is 7949198339. The next prime is 7949198377. The reversal of 7949198357 is 7538919497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7602270481 + 346927876 = 87191^2 + 18626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7949198357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7949198357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7949198377) 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, 3974599178 + 3974599179.

It is an arithmetic number, because the mean of its divisors is an integer number (3974599179).

Almost surely, 2^7949198357 is an apocalyptic number.

It is an amenable number.

7949198357 is a deficient number, since it is larger than the sum of its proper divisors (1).

7949198357 is an equidigital number, since it uses as much as digits as its factorization.

7949198357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17146080, while the sum is 62.

The square root of 7949198357 is about 89158.2769965862. The cubic root of 7949198357 is about 1995.7575368664.

The spelling of 7949198357 in words is "seven billion, nine hundred forty-nine million, one hundred ninety-eight thousand, three hundred fifty-seven".