166118386 has 16 divisors (see below), whose sum is σ = 285155136. Its totient is φ = 71098416.

The previous prime is 166118371. The next prime is 166118389. The reversal of 166118386 is 683811661.

166118386 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166118389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3480 + ... + 18556.

It is an arithmetic number, because the mean of its divisors is an integer number (17822196).

Almost surely, 2^166118386 is an apocalyptic number.

166118386 is a deficient number, since it is larger than the sum of its proper divisors (119036750).

166118386 is a wasteful number, since it uses less digits than its factorization.

166118386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15873.

The product of its digits is 41472, while the sum is 40.

The square root of 166118386 is about 12888.6921757019. The cubic root of 166118386 is about 549.7170842473.

The spelling of 166118386 in words is "one hundred sixty-six million, one hundred eighteen thousand, three hundred eighty-six".