1276113827 has 2 divisors, whose sum is σ = 1276113828. Its totient is φ = 1276113826.

The previous prime is 1276113821. The next prime is 1276113829. The reversal of 1276113827 is 7283116721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1276113827 - 2⁸ = 1276113571 is a prime.

Together with 1276113829, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1276113821) 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, 638056913 + 638056914.

It is an arithmetic number, because the mean of its divisors is an integer number (638056914).

Almost surely, 2^1276113827 is an apocalyptic number.

1276113827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276113827 is an equidigital number, since it uses as much as digits as its factorization.

1276113827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 38.

The square root of 1276113827 is about 35722.7354355738. The cubic root of 1276113827 is about 1084.6671101763.

The spelling of 1276113827 in words is "one billion, two hundred seventy-six million, one hundred thirteen thousand, eight hundred twenty-seven".