1266802533 has 12 divisors (see below), whose sum is σ = 1909383840. Its totient is φ = 807815976.

The previous prime is 1266802517. The next prime is 1266802627. The reversal of 1266802533 is 3352086621.

It is a happy number.

It is not a de Polignac number, because 1266802533 - 2⁴ = 1266802517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266002533) 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 in 11 ways as a sum of consecutive naturals, for example, 3059703 + ... + 3060116.

It is an arithmetic number, because the mean of its divisors is an integer number (159115320).

Almost surely, 2^1266802533 is an apocalyptic number.

It is an amenable number.

1266802533 is a deficient number, since it is larger than the sum of its proper divisors (642581307).

1266802533 is a wasteful number, since it uses less digits than its factorization.

1266802533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6119848 (or 6119845 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1266802533 is about 35592.1695461235. The cubic root of 1266802533 is about 1082.0225397136.

The spelling of 1266802533 in words is "one billion, two hundred sixty-six million, eight hundred two thousand, five hundred thirty-three".