2163180168 has 48 divisors (see below), whose sum is σ = 6075604080. Its totient is φ = 721059408.

The previous prime is 2163180161. The next prime is 2163180179. The reversal of 2163180168 is 8610813612.

2163180168 is a `hidden beast` number, since 2 + 1 + 631 + 8 + 0 + 16 + 8 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (2163180161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 554430 + ... + 558317.

It is an arithmetic number, because the mean of its divisors is an integer number (126575085).

Almost surely, 2^2163180168 is an apocalyptic number.

It is an amenable number.

2163180168 is an abundant number, since it is smaller than the sum of its proper divisors (3912423912).

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

2163180168 is a wasteful number, since it uses less digits than its factorization.

2163180168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112768 (or 1112752 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 2163180168 is about 46510.0007310256. Note that the first 3 decimals coincide. The cubic root of 2163180168 is about 1293.2948977725.

The spelling of 2163180168 in words is "two billion, one hundred sixty-three million, one hundred eighty thousand, one hundred sixty-eight".