266175149 has 2 divisors, whose sum is σ = 266175150. Its totient is φ = 266175148.

The previous prime is 266175071. The next prime is 266175163. The reversal of 266175149 is 941571662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187498249 + 78676900 = 13693^2 + 8870^2 .

It is a cyclic number.

It is not a de Polignac number, because 266175149 - 2²⁰ = 265126573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266075149) 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, 133087574 + 133087575.

It is an arithmetic number, because the mean of its divisors is an integer number (133087575).

Almost surely, 2^266175149 is an apocalyptic number.

It is an amenable number.

266175149 is a deficient number, since it is larger than the sum of its proper divisors (1).

266175149 is an equidigital number, since it uses as much as digits as its factorization.

266175149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 266175149 is about 16314.8750838001. The cubic root of 266175149 is about 643.2638839423.

The spelling of 266175149 in words is "two hundred sixty-six million, one hundred seventy-five thousand, one hundred forty-nine".