1109071812 has 24 divisors (see below), whose sum is σ = 2650953312. Its totient is φ = 360673600.

The previous prime is 1109071811. The next prime is 1109071829. The reversal of 1109071812 is 2181709011.

It is a self number, because there is not a number n which added to its sum of digits gives 1109071812.

It is not an unprimeable number, because it can be changed into a prime (1109071811) 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 7 ways as a sum of consecutive naturals, for example, 1126614 + ... + 1127597.

It is an arithmetic number, because the mean of its divisors is an integer number (110456388).

Almost surely, 2^1109071812 is an apocalyptic number.

1109071812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1109071812 is an abundant number, since it is smaller than the sum of its proper divisors (1541881500).

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

1109071812 is a wasteful number, since it uses less digits than its factorization.

1109071812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254259 (or 2254257 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 30.

The square root of 1109071812 is about 33302.7297980211. The cubic root of 1109071812 is about 1035.1101229415.

The spelling of 1109071812 in words is "one billion, one hundred nine million, seventy-one thousand, eight hundred twelve".