197304813457 has 2 divisors, whose sum is σ = 197304813458. Its totient is φ = 197304813456.

The previous prime is 197304813413. The next prime is 197304813491. The reversal of 197304813457 is 754318403791.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170565696016 + 26739117441 = 412996^2 + 163521^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197304813457 is a prime.

It is not a weakly prime, because it can be changed into another prime (197304813257) 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, 98652406728 + 98652406729.

It is an arithmetic number, because the mean of its divisors is an integer number (98652406729).

Almost surely, 2^197304813457 is an apocalyptic number.

It is an amenable number.

197304813457 is a deficient number, since it is larger than the sum of its proper divisors (1).

197304813457 is an equidigital number, since it uses as much as digits as its factorization.

197304813457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 197304813457 in words is "one hundred ninety-seven billion, three hundred four million, eight hundred thirteen thousand, four hundred fifty-seven".