1989325 has 12 divisors (see below), whose sum is σ = 2656948. Its totient is φ = 1468800.

The previous prime is 1989307. The next prime is 1989329. The reversal of 1989325 is 5239891.

It can be written as a sum of positive squares in 6 ways, for example, as 556516 + 1432809 = 746^2 + 1197^2 .

It is not a de Polignac number, because 1989325 - 2¹¹ = 1987277 is a prime.

It is a Duffinian number.

1989325 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989329) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2736 + ... + 3385.

2^1989325 is an apocalyptic number.

It is an amenable number.

1989325 is a deficient number, since it is larger than the sum of its proper divisors (667623).

1989325 is a wasteful number, since it uses less digits than its factorization.

1989325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144 (or 6139 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 1989325 is about 1410.4343302685. The cubic root of 1989325 is about 125.7675440295.

The spelling of 1989325 in words is "one million, nine hundred eighty-nine thousand, three hundred twenty-five".