1689189 has 8 divisors (see below), whose sum is σ = 2350272. Its totient is φ = 1077120.

The previous prime is 1689167. The next prime is 1689197. The reversal of 1689189 is 9819861.

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

It is not a de Polignac number, because 1689189 - 2⁹ = 1688677 is a prime.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 1689189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12172 + ... + 12309.

It is an arithmetic number, because the mean of its divisors is an integer number (293784).

2^1689189 is an apocalyptic number.

It is an amenable number.

1689189 is a deficient number, since it is larger than the sum of its proper divisors (661083).

1689189 is a wasteful number, since it uses less digits than its factorization.

1689189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24507.

The product of its digits is 31104, while the sum is 42.

The square root of 1689189 is about 1299.6880394926. The cubic root of 1689189 is about 119.0947859550.

The spelling of 1689189 in words is "one million, six hundred eighty-nine thousand, one hundred eighty-nine".