1118789868 has 96 divisors (see below), whose sum is σ = 3101704704. Its totient is φ = 307196928.

The previous prime is 1118789857. The next prime is 1118789887. The reversal of 1118789868 is 8689878111.

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, 255796 + ... + 260132.

It is an arithmetic number, because the mean of its divisors is an integer number (32309424).

Almost surely, 2^1118789868 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 1118789868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1550852352).

1118789868 is an abundant number, since it is smaller than the sum of its proper divisors (1982914836).

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

1118789868 is a wasteful number, since it uses less digits than its factorization.

1118789868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471 (or 4469 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 57.

The square root of 1118789868 is about 33448.3163701852. The cubic root of 1118789868 is about 1038.1246615771.

The spelling of 1118789868 in words is "one billion, one hundred eighteen million, seven hundred eighty-nine thousand, eight hundred sixty-eight".