1111858056 has 64 divisors (see below), whose sum is σ = 3099811200. Its totient is φ = 369261504.

The previous prime is 1111858051. The next prime is 1111858067. The reversal of 1111858056 is 6508581111.

1111858056 is a `hidden beast` number, since 1 + 11 + 18 + 580 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1111858056.

It is not an unprimeable number, because it can be changed into a prime (1111858051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50541 + ... + 69123.

It is an arithmetic number, because the mean of its divisors is an integer number (48434550).

Almost surely, 2^1111858056 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 1111858056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1549905600).

1111858056 is an abundant number, since it is smaller than the sum of its proper divisors (1987953144).

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

1111858056 is a wasteful number, since it uses less digits than its factorization.

1111858056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18875 (or 18865 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 36.

The square root of 1111858056 is about 33344.5356242968. The cubic root of 1111858056 is about 1035.9762098064.

The spelling of 1111858056 in words is "one billion, one hundred eleven million, eight hundred fifty-eight thousand, fifty-six".