1276881367 has 2 divisors, whose sum is σ = 1276881368. Its totient is φ = 1276881366.

The previous prime is 1276881313. The next prime is 1276881449. The reversal of 1276881367 is 7631886721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1276881367 - 2²³ = 1268492759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1276881367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1276881167) 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, 638440683 + 638440684.

It is an arithmetic number, because the mean of its divisors is an integer number (638440684).

Almost surely, 2^1276881367 is an apocalyptic number.

1276881367 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276881367 is an equidigital number, since it uses as much as digits as its factorization.

1276881367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 49.

The square root of 1276881367 is about 35733.4768389531. The cubic root of 1276881367 is about 1084.8845303155.

The spelling of 1276881367 in words is "one billion, two hundred seventy-six million, eight hundred eighty-one thousand, three hundred sixty-seven".