1298461291 has 2 divisors, whose sum is σ = 1298461292. Its totient is φ = 1298461290.

The previous prime is 1298461289. The next prime is 1298461429. The reversal of 1298461291 is 1921648921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1298461291 - 2¹ = 1298461289 is a prime.

Together with 1298461289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1298461261) 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, 649230645 + 649230646.

It is an arithmetic number, because the mean of its divisors is an integer number (649230646).

Almost surely, 2^1298461291 is an apocalyptic number.

1298461291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298461291 is an equidigital number, since it uses as much as digits as its factorization.

1298461291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 43.

The square root of 1298461291 is about 36034.1683822452. The cubic root of 1298461291 is about 1090.9621140728.

The spelling of 1298461291 in words is "one billion, two hundred ninety-eight million, four hundred sixty-one thousand, two hundred ninety-one".