266843049 has 32 divisors (see below), whose sum is σ = 410703360. Its totient is φ = 152409600.

The previous prime is 266843039. The next prime is 266843069. The reversal of 266843049 is 940348662.

It is a happy number.

It is not a de Polignac number, because 266843049 - 2¹⁶ = 266777513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 266843049.

It is not an unprimeable number, because it can be changed into a prime (266843039) 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 in 31 ways as a sum of consecutive naturals, for example, 131289 + ... + 133305.

It is an arithmetic number, because the mean of its divisors is an integer number (12834480).

Almost surely, 2^266843049 is an apocalyptic number.

It is an amenable number.

266843049 is a deficient number, since it is larger than the sum of its proper divisors (143860311).

266843049 is a wasteful number, since it uses less digits than its factorization.

266843049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261.

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 266843049 is about 16335.3313097715. The cubic root of 266843049 is about 643.8014711853.

The spelling of 266843049 in words is "two hundred sixty-six million, eight hundred forty-three thousand, forty-nine".