1188113992 has 64 divisors (see below), whose sum is σ = 2494900800. Its totient is φ = 526659840.

The previous prime is 1188113989. The next prime is 1188114001. The reversal of 1188113992 is 2993118811.

It is a super-2 number, since 2×1188113992² = 2823229715972352128, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 635443 + ... + 637309.

It is an arithmetic number, because the mean of its divisors is an integer number (38982825).

Almost surely, 2^1188113992 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 1188113992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1247450400).

1188113992 is an abundant number, since it is smaller than the sum of its proper divisors (1306786808).

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

1188113992 is a wasteful number, since it uses less digits than its factorization.

1188113992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126 (or 2122 counting only the distinct ones).

The product of its digits is 31104, while the sum is 43.

The square root of 1188113992 is about 34469.0294612425. The cubic root of 1188113992 is about 1059.1383742171.

The spelling of 1188113992 in words is "one billion, one hundred eighty-eight million, one hundred thirteen thousand, nine hundred ninety-two".