1326266497 has 2 divisors, whose sum is σ = 1326266498. Its totient is φ = 1326266496.

The previous prime is 1326266489. The next prime is 1326266507. The reversal of 1326266497 is 7946626231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1240166656 + 86099841 = 35216^2 + 9279^2 .

It is an emirp because it is prime and its reverse (7946626231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1326266497 - 2³ = 1326266489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1326266437) 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, 663133248 + 663133249.

It is an arithmetic number, because the mean of its divisors is an integer number (663133249).

Almost surely, 2^1326266497 is an apocalyptic number.

It is an amenable number.

1326266497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326266497 is an equidigital number, since it uses as much as digits as its factorization.

1326266497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 46.

The square root of 1326266497 is about 36417.9419654653. The cubic root of 1326266497 is about 1098.6944558002.

The spelling of 1326266497 in words is "one billion, three hundred twenty-six million, two hundred sixty-six thousand, four hundred ninety-seven".