1289745068 has 12 divisors (see below), whose sum is σ = 2264407992. Its totient is φ = 642771360.

The previous prime is 1289745059. The next prime is 1289745113. The reversal of 1289745068 is 8605479821.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 523913 + ... + 526368.

It is an arithmetic number, because the mean of its divisors is an integer number (188700666).

Almost surely, 2^1289745068 is an apocalyptic number.

It is an amenable number.

1289745068 is a deficient number, since it is larger than the sum of its proper divisors (974662924).

1289745068 is a wasteful number, since it uses less digits than its factorization.

1289745068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050592 (or 1050590 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 1289745068 is about 35913.0208698739. The cubic root of 1289745068 is about 1088.5155192401.

The spelling of 1289745068 in words is "one billion, two hundred eighty-nine million, seven hundred forty-five thousand, sixty-eight".