20189203 has 4 divisors (see below), whose sum is σ = 20200768. Its totient is φ = 20177640.

The previous prime is 20189189. The next prime is 20189207. The reversal of 20189203 is 30298102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20189203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20189207) 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, 2568 + ... + 6853.

It is an arithmetic number, because the mean of its divisors is an integer number (5050192).

Almost surely, 2^20189203 is an apocalyptic number.

20189203 is a deficient number, since it is larger than the sum of its proper divisors (11565).

20189203 is an equidigital number, since it uses as much as digits as its factorization.

20189203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11564.

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

The square root of 20189203 is about 4493.2396998157. The cubic root of 20189203 is about 272.2950365139.

The spelling of 20189203 in words is "twenty million, one hundred eighty-nine thousand, two hundred three".