1288366089 has 16 divisors (see below), whose sum is σ = 1748984832. Its totient is φ = 843453968.

The previous prime is 1288366081. The next prime is 1288366109. The reversal of 1288366089 is 9806638821.

It is not a de Polignac number, because 1288366089 - 2³ = 1288366081 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1288366081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26092 + ... + 57074.

It is an arithmetic number, because the mean of its divisors is an integer number (109311552).

Almost surely, 2^1288366089 is an apocalyptic number.

It is an amenable number.

1288366089 is a deficient number, since it is larger than the sum of its proper divisors (460618743).

1288366089 is a wasteful number, since it uses less digits than its factorization.

1288366089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31236.

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 1288366089 is about 35893.8168630755. The cubic root of 1288366089 is about 1088.1274385871.

The spelling of 1288366089 in words is "one billion, two hundred eighty-eight million, three hundred sixty-six thousand, eighty-nine".