1268603659 has 2 divisors, whose sum is σ = 1268603660. Its totient is φ = 1268603658.

The previous prime is 1268603629. The next prime is 1268603671. The reversal of 1268603659 is 9563068621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1268603659 - 2⁵ = 1268603627 is a prime.

It is not a weakly prime, because it can be changed into another prime (1268603629) 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, 634301829 + 634301830.

It is an arithmetic number, because the mean of its divisors is an integer number (634301830).

Almost surely, 2^1268603659 is an apocalyptic number.

1268603659 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268603659 is an equidigital number, since it uses as much as digits as its factorization.

1268603659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 1268603659 is about 35617.4628377710. The cubic root of 1268603659 is about 1082.5350994811.

The spelling of 1268603659 in words is "one billion, two hundred sixty-eight million, six hundred three thousand, six hundred fifty-nine".