266147149 has 2 divisors, whose sum is σ = 266147150. Its totient is φ = 266147148.

The previous prime is 266147143. The next prime is 266147243. The reversal of 266147149 is 941741662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210047049 + 56100100 = 14493^2 + 7490^2 .

It is a cyclic number.

It is not a de Polignac number, because 266147149 - 2⁹ = 266146637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266147143) 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, 133073574 + 133073575.

It is an arithmetic number, because the mean of its divisors is an integer number (133073575).

Almost surely, 2^266147149 is an apocalyptic number.

It is an amenable number.

266147149 is a deficient number, since it is larger than the sum of its proper divisors (1).

266147149 is an equidigital number, since it uses as much as digits as its factorization.

266147149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 266147149 is about 16314.0169486243. The cubic root of 266147149 is about 643.2413273408.

The spelling of 266147149 in words is "two hundred sixty-six million, one hundred forty-seven thousand, one hundred forty-nine".