1166183789886 has 96 divisors (see below), whose sum is σ = 2686925397600. Its totient is φ = 374924662560.

The previous prime is 1166183789863. The next prime is 1166183789909. The reversal of 1166183789886 is 6889873816611.

1166183789886 is a `hidden beast` number, since 1 + 166 + 1 + 8 + 378 + 98 + 8 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (1166183789863) and next prime (1166183789909).

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1239302176 + ... + 1239303116.

It is an arithmetic number, because the mean of its divisors is an integer number (27988806225).

Almost surely, 2^{1166183789886} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166183789886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1343462698800).

1166183789886 is an abundant number, since it is smaller than the sum of its proper divisors (1520741607714).

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

1166183789886 is an frugal number, since it uses more digits than its factorization.

1166183789886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980 (or 975 counting only the distinct ones).

The product of its digits is 167215104, while the sum is 72.

The spelling of 1166183789886 in words is "one trillion, one hundred sixty-six billion, one hundred eighty-three million, seven hundred eighty-nine thousand, eight hundred eighty-six".