297643774489 has 2 divisors, whose sum is σ = 297643774490. Its totient is φ = 297643774488.

The previous prime is 297643774487. The next prime is 297643774609. The reversal of 297643774489 is 984477346792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255108836889 + 42534937600 = 505083^2 + 206240^2 .

It is a cyclic number.

It is not a de Polignac number, because 297643774489 - 2¹ = 297643774487 is a prime.

It is a super-2 number, since 2×297643774489² (a number of 24 digits) contains 22 as substring.

Together with 297643774487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (297643774487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148821887244 + 148821887245.

It is an arithmetic number, because the mean of its divisors is an integer number (148821887245).

Almost surely, 2^297643774489 is an apocalyptic number.

It is an amenable number.

297643774489 is a deficient number, since it is larger than the sum of its proper divisors (1).

297643774489 is an equidigital number, since it uses as much as digits as its factorization.

297643774489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 512096256, while the sum is 70.

The spelling of 297643774489 in words is "two hundred ninety-seven billion, six hundred forty-three million, seven hundred seventy-four thousand, four hundred eighty-nine".