1166386818 has 16 divisors (see below), whose sum is σ = 2333640096. Its totient is φ = 388651200.

The previous prime is 1166386783. The next prime is 1166386829. The reversal of 1166386818 is 8186836611.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17896 + ... + 51507.

It is an arithmetic number, because the mean of its divisors is an integer number (145852506).

Almost surely, 2^1166386818 is an apocalyptic number.

1166386818 is an abundant number, since it is smaller than the sum of its proper divisors (1167253278).

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

1166386818 is a wasteful number, since it uses less digits than its factorization.

1166386818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72209.

The product of its digits is 331776, while the sum is 48.

The square root of 1166386818 is about 34152.4057424949. The cubic root of 1166386818 is about 1052.6424202683.

The spelling of 1166386818 in words is "one billion, one hundred sixty-six million, three hundred eighty-six thousand, eight hundred eighteen".