297613970809 has 2 divisors, whose sum is σ = 297613970810. Its totient is φ = 297613970808.

The previous prime is 297613970807. The next prime is 297613970813. The reversal of 297613970809 is 908079316792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278720643600 + 18893327209 = 527940^2 + 137453^2 .

It is a cyclic number.

It is not a de Polignac number, because 297613970809 - 2¹ = 297613970807 is a prime.

It is a super-2 number, since 2×297613970809² (a number of 24 digits) contains 22 as substring.

Together with 297613970807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (297613970807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148806985404 + 148806985405.

It is an arithmetic number, because the mean of its divisors is an integer number (148806985405).

Almost surely, 2^297613970809 is an apocalyptic number.

It is an amenable number.

297613970809 is a deficient number, since it is larger than the sum of its proper divisors (1).

297613970809 is an equidigital number, since it uses as much as digits as its factorization.

297613970809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10287648, while the sum is 61.

The spelling of 297613970809 in words is "two hundred ninety-seven billion, six hundred thirteen million, nine hundred seventy thousand, eight hundred nine".