166066188 has 24 divisors (see below), whose sum is σ = 387826992. Its totient is φ = 55306944.

The previous prime is 166066177. The next prime is 166066253. The reversal of 166066188 is 881660661.

166066188 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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, 9906 + ... + 20742.

It is an arithmetic number, because the mean of its divisors is an integer number (16159458).

Almost surely, 2^166066188 is an apocalyptic number.

It is an amenable number.

166066188 is an abundant number, since it is smaller than the sum of its proper divisors (221760804).

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

166066188 is a wasteful number, since it uses less digits than its factorization.

166066188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12121 (or 12119 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 166066188 is about 12886.6670632868. The cubic root of 166066188 is about 549.6595005385.

The spelling of 166066188 in words is "one hundred sixty-six million, sixty-six thousand, one hundred eighty-eight".