1276159667 has 2 divisors, whose sum is σ = 1276159668. Its totient is φ = 1276159666.

The previous prime is 1276159657. The next prime is 1276159673. The reversal of 1276159667 is 7669516721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1276159667 - 2⁶ = 1276159603 is a prime.

It is not a weakly prime, because it can be changed into another prime (1276159657) 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, 638079833 + 638079834.

It is an arithmetic number, because the mean of its divisors is an integer number (638079834).

Almost surely, 2^1276159667 is an apocalyptic number.

1276159667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276159667 is an equidigital number, since it uses as much as digits as its factorization.

1276159667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 50.

The square root of 1276159667 is about 35723.3770380125. The cubic root of 1276159667 is about 1084.6800976659.

The spelling of 1276159667 in words is "one billion, two hundred seventy-six million, one hundred fifty-nine thousand, six hundred sixty-seven".