16889918 has 8 divisors (see below), whose sum is σ = 25354560. Its totient is φ = 8438400.

The previous prime is 16889893. The next prime is 16889921. The reversal of 16889918 is 81998861.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 1118 + ... + 5918.

It is an arithmetic number, because the mean of its divisors is an integer number (3169320).

Almost surely, 2^16889918 is an apocalyptic number.

16889918 is a deficient number, since it is larger than the sum of its proper divisors (8464642).

16889918 is a wasteful number, since it uses less digits than its factorization.

16889918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6562.

The product of its digits is 248832, while the sum is 50.

The square root of 16889918 is about 4109.7345413056. The cubic root of 16889918 is about 256.5719532099.

The spelling of 16889918 in words is "sixteen million, eight hundred eighty-nine thousand, nine hundred eighteen".