1128886188 has 12 divisors (see below), whose sum is σ = 2634067800. Its totient is φ = 376295392.

The previous prime is 1128886183. The next prime is 1128886189. The reversal of 1128886188 is 8816888211.

1128886188 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1128886188.

It is not an unprimeable number, because it can be changed into a prime (1128886183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47036913 + ... + 47036936.

It is an arithmetic number, because the mean of its divisors is an integer number (219505650).

Almost surely, 2^1128886188 is an apocalyptic number.

It is an amenable number.

1128886188 is an abundant number, since it is smaller than the sum of its proper divisors (1505181612).

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

1128886188 is a wasteful number, since it uses less digits than its factorization.

1128886188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94073856 (or 94073854 counting only the distinct ones).

The product of its digits is 393216, while the sum is 51.

The square root of 1128886188 is about 33598.9015891889. The cubic root of 1128886188 is about 1041.2381051038.

The spelling of 1128886188 in words is "one billion, one hundred twenty-eight million, eight hundred eighty-six thousand, one hundred eighty-eight".