1989368 has 16 divisors (see below), whose sum is σ = 3759000. Its totient is φ = 986976.

The previous prime is 1989353. The next prime is 1989401. The reversal of 1989368 is 8639891.

1989368 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218 + ... + 2006.

2^1989368 is an apocalyptic number.

It is an amenable number.

1989368 is a deficient number, since it is larger than the sum of its proper divisors (1769632).

1989368 is a wasteful number, since it uses less digits than its factorization.

1989368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934 (or 1930 counting only the distinct ones).

The product of its digits is 93312, while the sum is 44.

The square root of 1989368 is about 1410.4495737175. The cubic root of 1989368 is about 125.7684501937.

The spelling of 1989368 in words is "one million, nine hundred eighty-nine thousand, three hundred sixty-eight".