266813093 has 2 divisors, whose sum is σ = 266813094. Its totient is φ = 266813092.

The previous prime is 266813089. The next prime is 266813111. The reversal of 266813093 is 390318662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204118369 + 62694724 = 14287^2 + 7918^2 .

It is a cyclic number.

It is not a de Polignac number, because 266813093 - 2² = 266813089 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266813023) 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, 133406546 + 133406547.

It is an arithmetic number, because the mean of its divisors is an integer number (133406547).

Almost surely, 2^266813093 is an apocalyptic number.

It is an amenable number.

266813093 is a deficient number, since it is larger than the sum of its proper divisors (1).

266813093 is an equidigital number, since it uses as much as digits as its factorization.

266813093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 266813093 is about 16334.4143757895. The cubic root of 266813093 is about 643.7773790724. Note that the first 3 decimals are identical.

The spelling of 266813093 in words is "two hundred sixty-six million, eight hundred thirteen thousand, ninety-three".