166841886 has 8 divisors (see below), whose sum is σ = 333683784. Its totient is φ = 55613960.

The previous prime is 166841881. The next prime is 166841887. The reversal of 166841886 is 688148661.

It is a sphenic number, since it is the product of 3 distinct primes.

166841886 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166841881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13903485 + ... + 13903496.

It is an arithmetic number, because the mean of its divisors is an integer number (41710473).

Almost surely, 2^166841886 is an apocalyptic number.

166841886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166841886 is a wasteful number, since it uses less digits than its factorization.

166841886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27806986.

The product of its digits is 442368, while the sum is 48.

The square root of 166841886 is about 12916.7289202801. The cubic root of 166841886 is about 550.5139944355.

The spelling of 166841886 in words is "one hundred sixty-six million, eight hundred forty-one thousand, eight hundred eighty-six".