1280275783 has 2 divisors, whose sum is σ = 1280275784. Its totient is φ = 1280275782.

The previous prime is 1280275721. The next prime is 1280275793. The reversal of 1280275783 is 3875720821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1280275783 - 2²⁵ = 1246721351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1280275793) 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, 640137891 + 640137892.

It is an arithmetic number, because the mean of its divisors is an integer number (640137892).

Almost surely, 2^1280275783 is an apocalyptic number.

1280275783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280275783 is an equidigital number, since it uses as much as digits as its factorization.

1280275783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 1280275783 is about 35780.9416170117. The cubic root of 1280275783 is about 1085.8450191877.

The spelling of 1280275783 in words is "one billion, two hundred eighty million, two hundred seventy-five thousand, seven hundred eighty-three".