1116165666 has 96 divisors (see below), whose sum is σ = 2910071808. Its totient is φ = 277247520.

The previous prime is 1116165623. The next prime is 1116165667. The reversal of 1116165666 is 6665616111.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116165667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 242115 + ... + 246681.

It is an arithmetic number, because the mean of its divisors is an integer number (30313248).

Almost surely, 2^1116165666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1116165666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1455035904).

1116165666 is an abundant number, since it is smaller than the sum of its proper divisors (1793906142).

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

1116165666 is a wasteful number, since it uses less digits than its factorization.

1116165666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4636 (or 4613 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 1116165666 is about 33409.0656259645. The cubic root of 1116165666 is about 1037.3123608211.

The spelling of 1116165666 in words is "one billion, one hundred sixteen million, one hundred sixty-five thousand, six hundred sixty-six".