297198388609 has 2 divisors, whose sum is σ = 297198388610. Its totient is φ = 297198388608.

The previous prime is 297198388549. The next prime is 297198388661. The reversal of 297198388609 is 906883891792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296954154225 + 244234384 = 544935^2 + 15628^2 .

It is a cyclic number.

It is not a de Polignac number, because 297198388609 - 2¹⁷ = 297198257537 is a prime.

It is not a weakly prime, because it can be changed into another prime (297198388309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148599194304 + 148599194305.

It is an arithmetic number, because the mean of its divisors is an integer number (148599194305).

Almost surely, 2^297198388609 is an apocalyptic number.

It is an amenable number.

297198388609 is a deficient number, since it is larger than the sum of its proper divisors (1).

297198388609 is an equidigital number, since it uses as much as digits as its factorization.

297198388609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94058496, while the sum is 70.

The spelling of 297198388609 in words is "two hundred ninety-seven billion, one hundred ninety-eight million, three hundred eighty-eight thousand, six hundred nine".