1326775133 has 2 divisors, whose sum is σ = 1326775134. Its totient is φ = 1326775132.

The previous prime is 1326775091. The next prime is 1326775139. The reversal of 1326775133 is 3315776231.

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., 823804804 + 502970329 = 28702^2 + 22427^2 .

It is a cyclic number.

It is not a de Polignac number, because 1326775133 - 2¹⁰ = 1326774109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1326775139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663387566 + 663387567.

It is an arithmetic number, because the mean of its divisors is an integer number (663387567).

Almost surely, 2^1326775133 is an apocalyptic number.

It is an amenable number.

1326775133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326775133 is an equidigital number, since it uses as much as digits as its factorization.

1326775133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 38.

The square root of 1326775133 is about 36424.9246121389. The cubic root of 1326775133 is about 1098.8348911576.

The spelling of 1326775133 in words is "one billion, three hundred twenty-six million, seven hundred seventy-five thousand, one hundred thirty-three".