1298243627 has 2 divisors, whose sum is σ = 1298243628. Its totient is φ = 1298243626.

The previous prime is 1298243599. The next prime is 1298243669. The reversal of 1298243627 is 7263428921.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1298243627 is a prime.

It is a super-2 number, since 2×1298243627² = 3370873030092230258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1298249627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649121813 + 649121814.

It is an arithmetic number, because the mean of its divisors is an integer number (649121814).

Almost surely, 2^1298243627 is an apocalyptic number.

1298243627 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298243627 is an equidigital number, since it uses as much as digits as its factorization.

1298243627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 44.

The square root of 1298243627 is about 36031.1480111306. The cubic root of 1298243627 is about 1090.9011505182.

The spelling of 1298243627 in words is "one billion, two hundred ninety-eight million, two hundred forty-three thousand, six hundred twenty-seven".