166943160 has 128 divisors (see below), whose sum is σ = 559353600. Its totient is φ = 44288640.

The previous prime is 166943159. The next prime is 166943167. The reversal of 166943160 is 61349661.

166943160 is a `hidden beast` number, since 166 + 9 + 431 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166943167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 357247 + ... + 357713.

It is an arithmetic number, because the mean of its divisors is an integer number (4369950).

Almost surely, 2^166943160 is an apocalyptic number.

166943160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166943160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279676800).

166943160 is an abundant number, since it is smaller than the sum of its proper divisors (392410440).

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

166943160 is a wasteful number, since it uses less digits than its factorization.

166943160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 808 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 166943160 is about 12920.6485905314. The cubic root of 166943160 is about 550.6253603095.

The spelling of 166943160 in words is "one hundred sixty-six million, nine hundred forty-three thousand, one hundred sixty".