1271795081 has 2 divisors, whose sum is σ = 1271795082. Its totient is φ = 1271795080.

The previous prime is 1271795069. The next prime is 1271795093. The reversal of 1271795081 is 1805971721.

It is a balanced prime because it is at equal distance from previous prime (1271795069) and next prime (1271795093).

It can be written as a sum of positive squares in only one way, i.e., 881139856 + 390655225 = 29684^2 + 19765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1271795081 - 2⁶ = 1271795017 is a prime.

It is a super-2 number, since 2×1271795081² = 3234925456111593122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1271795881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635897540 + 635897541.

It is an arithmetic number, because the mean of its divisors is an integer number (635897541).

Almost surely, 2^1271795081 is an apocalyptic number.

It is an amenable number.

1271795081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271795081 is an equidigital number, since it uses as much as digits as its factorization.

1271795081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 41.

The square root of 1271795081 is about 35662.2360628158. The cubic root of 1271795081 is about 1083.4421159612.

The spelling of 1271795081 in words is "one billion, two hundred seventy-one million, seven hundred ninety-five thousand, eighty-one".