1276929263 has 2 divisors, whose sum is σ = 1276929264. Its totient is φ = 1276929262.

The previous prime is 1276929169. The next prime is 1276929289. The reversal of 1276929263 is 3629296721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1276929263 - 2²⁶ = 1209820399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1276929293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638464631 + 638464632.

It is an arithmetic number, because the mean of its divisors is an integer number (638464632).

Almost surely, 2^1276929263 is an apocalyptic number.

1276929263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276929263 is an equidigital number, since it uses as much as digits as its factorization.

1276929263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 47.

The square root of 1276929263 is about 35734.1470165443. The cubic root of 1276929263 is about 1084.8980948697.

The spelling of 1276929263 in words is "one billion, two hundred seventy-six million, nine hundred twenty-nine thousand, two hundred sixty-three".