1298320453 has 2 divisors, whose sum is σ = 1298320454. Its totient is φ = 1298320452.

The previous prime is 1298320451. The next prime is 1298320469. The reversal of 1298320453 is 3540238921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1175598369 + 122722084 = 34287^2 + 11078^2 .

It is a cyclic number.

It is not a de Polignac number, because 1298320453 - 2¹ = 1298320451 is a prime.

Together with 1298320451, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1298320451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649160226 + 649160227.

It is an arithmetic number, because the mean of its divisors is an integer number (649160227).

Almost surely, 2^1298320453 is an apocalyptic number.

It is an amenable number.

1298320453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298320453 is an equidigital number, since it uses as much as digits as its factorization.

1298320453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1298320453 is about 36032.2141007183. The cubic root of 1298320453 is about 1090.9226688005.

The spelling of 1298320453 in words is "one billion, two hundred ninety-eight million, three hundred twenty thousand, four hundred fifty-three".