1161113888 has 24 divisors (see below), whose sum is σ = 2493756720. Its totient is φ = 527778880.

The previous prime is 1161113887. The next prime is 1161113903. The reversal of 1161113888 is 8883111611.

It is not an unprimeable number, because it can be changed into a prime (1161113881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1648958 + ... + 1649661.

It is an arithmetic number, because the mean of its divisors is an integer number (103906530).

Almost surely, 2^1161113888 is an apocalyptic number.

It is an amenable number.

1161113888 is an abundant number, since it is smaller than the sum of its proper divisors (1332642832).

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

1161113888 is a wasteful number, since it uses less digits than its factorization.

1161113888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3298640 (or 3298632 counting only the distinct ones).

The product of its digits is 9216, while the sum is 38.

The square root of 1161113888 is about 34075.1212470330. The cubic root of 1161113888 is about 1051.0537834866.

The spelling of 1161113888 in words is "one billion, one hundred sixty-one million, one hundred thirteen thousand, eight hundred eighty-eight".