16887189 has 16 divisors (see below), whose sum is σ = 24644160. Its totient is φ = 10200960.

The previous prime is 16887161. The next prime is 16887191. The reversal of 16887189 is 98178861.

It is not a de Polignac number, because 16887189 - 2¹⁹ = 16362901 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16887139) 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 15 ways as a sum of consecutive naturals, for example, 12457 + ... + 13745.

It is an arithmetic number, because the mean of its divisors is an integer number (1540260).

Almost surely, 2^16887189 is an apocalyptic number.

It is an amenable number.

16887189 is a deficient number, since it is larger than the sum of its proper divisors (7756971).

16887189 is a wasteful number, since it uses less digits than its factorization.

16887189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700.

The product of its digits is 193536, while the sum is 48.

The square root of 16887189 is about 4109.4025113148. The cubic root of 16887189 is about 256.5581338696.

The spelling of 16887189 in words is "sixteen million, eight hundred eighty-seven thousand, one hundred eighty-nine".