189163163 has 4 divisors (see below), whose sum is σ = 216186480. Its totient is φ = 162139848.

The previous prime is 189163159. The next prime is 189163171. The reversal of 189163163 is 361361981.

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

It is a cyclic number.

It is not a de Polignac number, because 189163163 - 2² = 189163159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189163123) 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, 13511648 + ... + 13511661.

It is an arithmetic number, because the mean of its divisors is an integer number (54046620).

Almost surely, 2^189163163 is an apocalyptic number.

189163163 is a deficient number, since it is larger than the sum of its proper divisors (27023317).

189163163 is an equidigital number, since it uses as much as digits as its factorization.

189163163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27023316.

The product of its digits is 23328, while the sum is 38.

The square root of 189163163 is about 13753.6599856184. The cubic root of 189163163 is about 574.0444499727.

The spelling of 189163163 in words is "one hundred eighty-nine million, one hundred sixty-three thousand, one hundred sixty-three".