266923133 has 2 divisors, whose sum is σ = 266923134. Its totient is φ = 266923132.

The previous prime is 266923127. The next prime is 266923159. The reversal of 266923133 is 331329662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208889209 + 58033924 = 14453^2 + 7618^2 .

It is a cyclic number.

It is not a de Polignac number, because 266923133 - 2¹⁰ = 266922109 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 266923093 and 266923102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266923183) 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, 133461566 + 133461567.

It is an arithmetic number, because the mean of its divisors is an integer number (133461567).

Almost surely, 2^266923133 is an apocalyptic number.

It is an amenable number.

266923133 is a deficient number, since it is larger than the sum of its proper divisors (1).

266923133 is an equidigital number, since it uses as much as digits as its factorization.

266923133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 35.

The square root of 266923133 is about 16337.7823770547. The cubic root of 266923133 is about 643.8658698899.

The spelling of 266923133 in words is "two hundred sixty-six million, nine hundred twenty-three thousand, one hundred thirty-three".