1109885580 has 144 divisors (see below), whose sum is σ = 3508596000. Its totient is φ = 283745280.

The previous prime is 1109885537. The next prime is 1109885611. The reversal of 1109885580 is 855889011.

1109885580 is a `hidden beast` number, since 1 + 1 + 0 + 98 + 8 + 558 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 434146 + ... + 436694.

It is an arithmetic number, because the mean of its divisors is an integer number (24365250).

Almost surely, 2^1109885580 is an apocalyptic number.

1109885580 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 1109885580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1754298000).

1109885580 is an abundant number, since it is smaller than the sum of its proper divisors (2398710420).

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

1109885580 is a wasteful number, since it uses less digits than its factorization.

1109885580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664 (or 2659 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 45.

The square root of 1109885580 is about 33314.9452948673. The cubic root of 1109885580 is about 1035.3632275498.

The spelling of 1109885580 in words is "one billion, one hundred nine million, eight hundred eighty-five thousand, five hundred eighty".