1295686081 has 2 divisors, whose sum is σ = 1295686082. Its totient is φ = 1295686080.

The previous prime is 1295686039. The next prime is 1295686087. The reversal of 1295686081 is 1806865921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1254930625 + 40755456 = 35425^2 + 6384^2 .

It is a cyclic number.

It is not a de Polignac number, because 1295686081 - 2⁹ = 1295685569 is a prime.

It is a super-2 number, since 2×1295686081² = 3357604840994277122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1295686087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647843040 + 647843041.

It is an arithmetic number, because the mean of its divisors is an integer number (647843041).

Almost surely, 2^1295686081 is an apocalyptic number.

It is an amenable number.

1295686081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295686081 is an equidigital number, since it uses as much as digits as its factorization.

1295686081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 1295686081 is about 35995.6397498364. The cubic root of 1295686081 is about 1090.1843194736.

The spelling of 1295686081 in words is "one billion, two hundred ninety-five million, six hundred eighty-six thousand, eighty-one".