1328268241 has 2 divisors, whose sum is σ = 1328268242. Its totient is φ = 1328268240.

The previous prime is 1328268181. The next prime is 1328268257. The reversal of 1328268241 is 1428628231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1059177025 + 269091216 = 32545^2 + 16404^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328268241 - 2¹³ = 1328260049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1328268241.

It is not a weakly prime, because it can be changed into another prime (1328268281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664134120 + 664134121.

It is an arithmetic number, because the mean of its divisors is an integer number (664134121).

Almost surely, 2^1328268241 is an apocalyptic number.

It is an amenable number.

1328268241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328268241 is an equidigital number, since it uses as much as digits as its factorization.

1328268241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 37.

The square root of 1328268241 is about 36445.4145401037. The cubic root of 1328268241 is about 1099.2469338757.

The spelling of 1328268241 in words is "one billion, three hundred twenty-eight million, two hundred sixty-eight thousand, two hundred forty-one".