20043163 has 4 divisors (see below), whose sum is σ = 22906480. Its totient is φ = 17179848.

The previous prime is 20043161. The next prime is 20043181. The reversal of 20043163 is 36134002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20043163 - 2¹ = 20043161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20043163.

It is not an unprimeable number, because it can be changed into a prime (20043161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1431648 + ... + 1431661.

It is an arithmetic number, because the mean of its divisors is an integer number (5726620).

Almost surely, 2^20043163 is an apocalyptic number.

20043163 is a deficient number, since it is larger than the sum of its proper divisors (2863317).

20043163 is an equidigital number, since it uses as much as digits as its factorization.

20043163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863316.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20043163 is about 4476.9591242271. The cubic root of 20043163 is about 271.6368920325.

Adding to 20043163 its reverse (36134002), we get a palindrome (56177165).

The spelling of 20043163 in words is "twenty million, forty-three thousand, one hundred sixty-three".