16894189 has 4 divisors (see below), whose sum is σ = 18193756. Its totient is φ = 15594624.

The previous prime is 16894183. The next prime is 16894201. The reversal of 16894189 is 98149861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7469289 + 9424900 = 2733^2 + 3070^2 .

It is a cyclic number.

It is not a de Polignac number, because 16894189 - 2⁷ = 16894061 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16894183) 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 3 ways as a sum of consecutive naturals, for example, 649764 + ... + 649789.

It is an arithmetic number, because the mean of its divisors is an integer number (4548439).

Almost surely, 2^16894189 is an apocalyptic number.

It is an amenable number.

16894189 is a deficient number, since it is larger than the sum of its proper divisors (1299567).

16894189 is a wasteful number, since it uses less digits than its factorization.

16894189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299566.

The product of its digits is 124416, while the sum is 46.

The square root of 16894189 is about 4110.2541283964. The cubic root of 16894189 is about 256.5935780723.

The spelling of 16894189 in words is "sixteen million, eight hundred ninety-four thousand, one hundred eighty-nine".