188985163 has 4 divisors (see below), whose sum is σ = 189012880. Its totient is φ = 188957448.

The previous prime is 188985151. The next prime is 188985217. The reversal of 188985163 is 361589881.

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 not a de Polignac number, because 188985163 - 2⁹ = 188984651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188985133) 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, 4306 + ... + 19912.

It is an arithmetic number, because the mean of its divisors is an integer number (47253220).

Almost surely, 2^188985163 is an apocalyptic number.

188985163 is a deficient number, since it is larger than the sum of its proper divisors (27717).

188985163 is a wasteful number, since it uses less digits than its factorization.

188985163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27716.

The product of its digits is 414720, while the sum is 49.

The square root of 188985163 is about 13747.1874578039. The cubic root of 188985163 is about 573.8643374229.

The spelling of 188985163 in words is "one hundred eighty-eight million, nine hundred eighty-five thousand, one hundred sixty-three".