1276480277 has 2 divisors, whose sum is σ = 1276480278. Its totient is φ = 1276480276.

The previous prime is 1276480267. The next prime is 1276480297. The reversal of 1276480277 is 7720846721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1273704721 + 2775556 = 35689^2 + 1666^2 .

It is a cyclic number.

It is not a de Polignac number, because 1276480277 - 2²⁴ = 1259703061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1276480217) 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, 638240138 + 638240139.

It is an arithmetic number, because the mean of its divisors is an integer number (638240139).

Almost surely, 2^1276480277 is an apocalyptic number.

It is an amenable number.

1276480277 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276480277 is an equidigital number, since it uses as much as digits as its factorization.

1276480277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 1276480277 is about 35727.8641539065. The cubic root of 1276480277 is about 1084.7709249024.

The spelling of 1276480277 in words is "one billion, two hundred seventy-six million, four hundred eighty thousand, two hundred seventy-seven".