1268251583 has 2 divisors, whose sum is σ = 1268251584. Its totient is φ = 1268251582.

The previous prime is 1268251559. The next prime is 1268251601. The reversal of 1268251583 is 3851528621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1268251583 - 2¹⁰ = 1268250559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1268251583.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1268251783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634125791 + 634125792.

It is an arithmetic number, because the mean of its divisors is an integer number (634125792).

Almost surely, 2^1268251583 is an apocalyptic number.

1268251583 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268251583 is an equidigital number, since it uses as much as digits as its factorization.

1268251583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 41.

The square root of 1268251583 is about 35612.5200315844. The cubic root of 1268251583 is about 1082.4349447719.

The spelling of 1268251583 in words is "one billion, two hundred sixty-eight million, two hundred fifty-one thousand, five hundred eighty-three".