1276116481 has 2 divisors, whose sum is σ = 1276116482. Its totient is φ = 1276116480.

The previous prime is 1276116397. The next prime is 1276116497. The reversal of 1276116481 is 1846116721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1263091600 + 13024881 = 35540^2 + 3609^2 .

It is a cyclic number.

It is not a de Polignac number, because 1276116481 - 2¹⁹ = 1275592193 is a prime.

It is a super-2 number, since 2×1276116481² = 3256946546159646722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1276116481.

It is not a weakly prime, because it can be changed into another prime (1276117481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638058240 + 638058241.

It is an arithmetic number, because the mean of its divisors is an integer number (638058241).

Almost surely, 2^1276116481 is an apocalyptic number.

It is an amenable number.

1276116481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276116481 is an equidigital number, since it uses as much as digits as its factorization.

1276116481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 37.

The square root of 1276116481 is about 35722.7725827657. The cubic root of 1276116481 is about 1084.6678621219.

The spelling of 1276116481 in words is "one billion, two hundred seventy-six million, one hundred sixteen thousand, four hundred eighty-one".