166212160 has 28 divisors (see below), whose sum is σ = 395793468. Its totient is φ = 66484736.

The previous prime is 166212149. The next prime is 166212197. The reversal of 166212160 is 61212661.

It can be written as a sum of positive squares in 2 ways, for example, as 81866304 + 84345856 = 9048^2 + 9184^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259387 + ... + 260026.

It is an arithmetic number, because the mean of its divisors is an integer number (14135481).

Almost surely, 2^166212160 is an apocalyptic number.

166212160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166212160 is an abundant number, since it is smaller than the sum of its proper divisors (229581308).

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

166212160 is an equidigital number, since it uses as much as digits as its factorization.

166212160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519430 (or 519420 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 166212160 is about 12892.3295024600. The cubic root of 166212160 is about 549.8205034098.

It can be divided in two parts, 16621 and 2160, that added together give a palindrome (18781).

The spelling of 166212160 in words is "one hundred sixty-six million, two hundred twelve thousand, one hundred sixty".