266149157 has 2 divisors, whose sum is σ = 266149158. Its totient is φ = 266149156.

The previous prime is 266149151. The next prime is 266149159. The reversal of 266149157 is 751941662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228191236 + 37957921 = 15106^2 + 6161^2 .

It is a cyclic number.

It is not a de Polignac number, because 266149157 - 2¹⁰ = 266148133 is a prime.

Together with 266149159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266149151) 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, 133074578 + 133074579.

It is an arithmetic number, because the mean of its divisors is an integer number (133074579).

Almost surely, 2^266149157 is an apocalyptic number.

It is an amenable number.

266149157 is a deficient number, since it is larger than the sum of its proper divisors (1).

266149157 is an equidigital number, since it uses as much as digits as its factorization.

266149157 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 266149157 is about 16314.0784906779. The cubic root of 266149157 is about 643.2429450240.

The spelling of 266149157 in words is "two hundred sixty-six million, one hundred forty-nine thousand, one hundred fifty-seven".