194979448297 has 2 divisors, whose sum is σ = 194979448298. Its totient is φ = 194979448296.

The previous prime is 194979448243. The next prime is 194979448333. The reversal of 194979448297 is 792844979491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160168844521 + 34810603776 = 400211^2 + 186576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194979448297 is a prime.

It is not a weakly prime, because it can be changed into another prime (194979448397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97489724148 + 97489724149.

It is an arithmetic number, because the mean of its divisors is an integer number (97489724149).

Almost surely, 2^194979448297 is an apocalyptic number.

It is an amenable number.

194979448297 is a deficient number, since it is larger than the sum of its proper divisors (1).

194979448297 is an equidigital number, since it uses as much as digits as its factorization.

194979448297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329204736, while the sum is 73.

The spelling of 194979448297 in words is "one hundred ninety-four billion, nine hundred seventy-nine million, four hundred forty-eight thousand, two hundred ninety-seven".