1099580868 has 36 divisors (see below), whose sum is σ = 2793481600. Its totient is φ = 364682736.

The previous prime is 1099580843. The next prime is 1099580869. The reversal of 1099580868 is 8680859901.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1099580869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69580 + ... + 83907.

Almost surely, 2^1099580868 is an apocalyptic number.

1099580868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1099580868 is an abundant number, since it is smaller than the sum of its proper divisors (1693900732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1099580868 is a wasteful number, since it uses less digits than its factorization.

1099580868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153696 (or 153691 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The square root of 1099580868 is about 33159.9286488979. The cubic root of 1099580868 is about 1032.1489892160.

The spelling of 1099580868 in words is "one billion, ninety-nine million, five hundred eighty thousand, eight hundred sixty-eight".