20180163 has 8 divisors (see below), whose sum is σ = 27774976. Its totient is φ = 13019400.

The previous prime is 20180161. The next prime is 20180179. The reversal of 20180163 is 36108102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20180163 - 2¹ = 20180161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20180161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108403 + ... + 108588.

It is an arithmetic number, because the mean of its divisors is an integer number (3471872).

Almost surely, 2^20180163 is an apocalyptic number.

20180163 is a deficient number, since it is larger than the sum of its proper divisors (7594813).

20180163 is a wasteful number, since it uses less digits than its factorization.

20180163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217025.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 20180163 is about 4492.2336315023. The cubic root of 20180163 is about 272.2543891339.

Adding to 20180163 its reverse (36108102), we get a palindrome (56288265).

The spelling of 20180163 in words is "twenty million, one hundred eighty thousand, one hundred sixty-three".