1268566849 has 8 divisors (see below), whose sum is σ = 1397328192. Its totient is φ = 1142045040.

The previous prime is 1268566813. The next prime is 1268566853. The reversal of 1268566849 is 9486658621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1268566849 - 2⁷ = 1268566721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1268566849.

It is not an unprimeable number, because it can be changed into a prime (1268566879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558694 + ... + 560959.

It is an arithmetic number, because the mean of its divisors is an integer number (174666024).

Almost surely, 2^1268566849 is an apocalyptic number.

It is an amenable number.

1268566849 is a deficient number, since it is larger than the sum of its proper divisors (128761343).

1268566849 is a wasteful number, since it uses less digits than its factorization.

1268566849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119767.

The product of its digits is 4976640, while the sum is 55.

The square root of 1268566849 is about 35616.9460931170. The cubic root of 1268566849 is about 1082.5246290446.

The spelling of 1268566849 in words is "one billion, two hundred sixty-eight million, five hundred sixty-six thousand, eight hundred forty-nine".