1099868880 has 160 divisors (see below), whose sum is σ = 3747938688. Its totient is φ = 264601600.

The previous prime is 1099868863. The next prime is 1099868923. The reversal of 1099868880 is 888689901.

It is a self number, because there is not a number n which added to its sum of digits gives 1099868880.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 360160 + ... + 363200.

Almost surely, 2^1099868880 is an apocalyptic number.

1099868880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1099868880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1873969344).

1099868880 is an abundant number, since it is smaller than the sum of its proper divisors (2648069808).

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

1099868880 is a wasteful number, since it uses less digits than its factorization.

1099868880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205 (or 3199 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 57.

The square root of 1099868880 is about 33164.2711362695. The cubic root of 1099868880 is about 1032.2390978966.

The spelling of 1099868880 in words is "one billion, ninety-nine million, eight hundred sixty-eight thousand, eight hundred eighty".