1113188888 has 16 divisors (see below), whose sum is σ = 2385404880. Its totient is φ = 477080928.

The previous prime is 1113188887. The next prime is 1113188903. The reversal of 1113188888 is 8888813111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113188887) 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 3 ways as a sum of consecutive naturals, for example, 9939131 + ... + 9939242.

It is an arithmetic number, because the mean of its divisors is an integer number (149087805).

Almost surely, 2^1113188888 is an apocalyptic number.

It is an amenable number.

1113188888 is an abundant number, since it is smaller than the sum of its proper divisors (1272215992).

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

1113188888 is a wasteful number, since it uses less digits than its factorization.

1113188888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19878386 (or 19878382 counting only the distinct ones).

The product of its digits is 98304, while the sum is 47.

The square root of 1113188888 is about 33364.4854298699. The cubic root of 1113188888 is about 1036.3893802255.

The spelling of 1113188888 in words is "one billion, one hundred thirteen million, one hundred eighty-eight thousand, eight hundred eighty-eight".