166998180 has 48 divisors (see below), whose sum is σ = 471752064. Its totient is φ = 44136960.

The previous prime is 166998173. The next prime is 166998199. The reversal of 166998180 is 81899661.

166998180 is digitally balanced in base 3, because in such base 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 15 ways as a sum of consecutive naturals, for example, 5536 + ... + 19095.

It is an arithmetic number, because the mean of its divisors is an integer number (9828168).

Almost surely, 2^166998180 is an apocalyptic number.

166998180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166998180 is an abundant number, since it is smaller than the sum of its proper divisors (304753884).

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

166998180 is a wasteful number, since it uses less digits than its factorization.

166998180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24756 (or 24754 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 166998180 is about 12922.7775652141. Note that the first 3 decimals coincide. The cubic root of 166998180 is about 550.6858441287.

The spelling of 166998180 in words is "one hundred sixty-six million, nine hundred ninety-eight thousand, one hundred eighty".