1166660118 has 64 divisors (see below), whose sum is σ = 2825786880. Its totient is φ = 354629664.

The previous prime is 1166660113. The next prime is 1166660123. The reversal of 1166660118 is 8110666611.

It is an interprime number because it is at equal distance from previous prime (1166660113) and next prime (1166660123).

It is a super-2 number, since 2×1166660118² = 2722191661863547848, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166660113) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 48255 + ... + 68277.

It is an arithmetic number, because the mean of its divisors is an integer number (44152920).

Almost surely, 2^1166660118 is an apocalyptic number.

1166660118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166660118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1412893440).

1166660118 is an abundant number, since it is smaller than the sum of its proper divisors (1659126762).

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

1166660118 is a wasteful number, since it uses less digits than its factorization.

1166660118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20130 (or 20124 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1166660118 is about 34156.4066904000. The cubic root of 1166660118 is about 1052.7246299041.

The spelling of 1166660118 in words is "one billion, one hundred sixty-six million, six hundred sixty thousand, one hundred eighteen".