1189118112 has 192 divisors, whose sum is σ = 3892654080. Its totient is φ = 309464064.

The previous prime is 1189118083. The next prime is 1189118131. The reversal of 1189118112 is 2118119811.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 689283 + ... + 691005.

It is an arithmetic number, because the mean of its divisors is an integer number (20274240).

Almost surely, 2^1189118112 is an apocalyptic number.

1189118112 is a gapful number since it is divisible by the number (12) 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 1189118112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1946327040).

1189118112 is an abundant number, since it is smaller than the sum of its proper divisors (2703535968).

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

1189118112 is a wasteful number, since it uses less digits than its factorization.

1189118112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835 (or 1827 counting only the distinct ones).

The product of its digits is 1152, while the sum is 33.

The square root of 1189118112 is about 34483.5919242761. The cubic root of 1189118112 is about 1059.4366628129.

It can be divided in two parts, 11891 and 18112, that added together give a palindrome (30003).

The spelling of 1189118112 in words is "one billion, one hundred eighty-nine million, one hundred eighteen thousand, one hundred twelve".