1109008012 has 72 divisors (see below), whose sum is σ = 2347441152. Its totient is φ = 448610400.

The previous prime is 1109008007. The next prime is 1109008031. The reversal of 1109008012 is 2108009011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1604587 + ... + 1605277.

Almost surely, 2^1109008012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1109008012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1173720576).

1109008012 is an abundant number, since it is smaller than the sum of its proper divisors (1238433140).

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

1109008012 is a wasteful number, since it uses less digits than its factorization.

1109008012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1109008012 is about 33301.7719048101. The cubic root of 1109008012 is about 1035.0902741240.

Subtracting 1109008012 from its reverse (2108009011), we obtain a palindrome (999000999).

The spelling of 1109008012 in words is "one billion, one hundred nine million, eight thousand, twelve".