1989163 has 8 divisors (see below), whose sum is σ = 2203200. Its totient is φ = 1780680.

The previous prime is 1989161. The next prime is 1989193. The reversal of 1989163 is 3619891.

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

It is not a de Polignac number, because 1989163 - 2¹ = 1989161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1989161) 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, 613 + ... + 2086.

It is an arithmetic number, because the mean of its divisors is an integer number (275400).

2^1989163 is an apocalyptic number.

1989163 is a deficient number, since it is larger than the sum of its proper divisors (214037).

1989163 is a wasteful number, since it uses less digits than its factorization.

1989163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777.

The product of its digits is 11664, while the sum is 37.

The square root of 1989163 is about 1410.3768999810. The cubic root of 1989163 is about 125.7641299912.

The spelling of 1989163 in words is "one million, nine hundred eighty-nine thousand, one hundred sixty-three".