166545144 has 144 divisors (see below), whose sum is σ = 487960200. Its totient is φ = 51246720.

The previous prime is 166545131. The next prime is 166545151. The reversal of 166545144 is 441545661.

166545144 is a `hidden beast` number, since 166 + 5 + 451 + 44 = 666.

166545144 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 166545099 and 166545108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2006527 + ... + 2006609.

Almost surely, 2^166545144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166545144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243980100).

166545144 is an abundant number, since it is smaller than the sum of its proper divisors (321415056).

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

166545144 is a wasteful number, since it uses less digits than its factorization.

166545144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 148 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 166545144 is about 12905.2370764740. The cubic root of 166545144 is about 550.1874226264.

The spelling of 166545144 in words is "one hundred sixty-six million, five hundred forty-five thousand, one hundred forty-four".