1282668481 has 2 divisors, whose sum is σ = 1282668482. Its totient is φ = 1282668480.

The previous prime is 1282668469. The next prime is 1282668487. The reversal of 1282668481 is 1848662821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1203743025 + 78925456 = 34695^2 + 8884^2 .

It is a cyclic number.

It is not a de Polignac number, because 1282668481 - 2⁵ = 1282668449 is a prime.

It is a super-2 number, since 2×1282668481² = 3290476864301694722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1282668487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641334240 + 641334241.

It is an arithmetic number, because the mean of its divisors is an integer number (641334241).

Almost surely, 2^1282668481 is an apocalyptic number.

It is an amenable number.

1282668481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1282668481 is an equidigital number, since it uses as much as digits as its factorization.

1282668481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294912, while the sum is 46.

The square root of 1282668481 is about 35814.3613792009. The cubic root of 1282668481 is about 1086.5210408167.

The spelling of 1282668481 in words is "one billion, two hundred eighty-two million, six hundred sixty-eight thousand, four hundred eighty-one".