1272808807 has 2 divisors, whose sum is σ = 1272808808. Its totient is φ = 1272808806.

The previous prime is 1272808777. The next prime is 1272808813. The reversal of 1272808807 is 7088082721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1272808807 - 2⁷ = 1272808679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272808307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636404403 + 636404404.

It is an arithmetic number, because the mean of its divisors is an integer number (636404404).

Almost surely, 2^1272808807 is an apocalyptic number.

1272808807 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272808807 is an equidigital number, since it uses as much as digits as its factorization.

1272808807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 43.

The square root of 1272808807 is about 35676.4461094431. The cubic root of 1272808807 is about 1083.7299038741.

The spelling of 1272808807 in words is "one billion, two hundred seventy-two million, eight hundred eight thousand, eight hundred seven".