16918 has 8 divisors (see below), whose sum is σ = 27720.
Its totient is φ = 7680.
The previous prime is 16903. The next prime is 16921. The reversal of 16918 is 81961.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a junction number, because it is equal to n+sod(n) for n = 16892 and 16901.
It is a congruent number.
It is an unprimeable number.
16918 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363 + ... + 406.
It is an arithmetic number, because the mean of its divisors is an integer number (3465).
216918 is an apocalyptic number.
16918 is a deficient number, since it is larger than the sum of its proper divisors (10802).
16918 is a wasteful number, since it uses less digits than its factorization.
16918 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 782.
The product of its digits is 432, while the sum is 25.
The square root of 16918 is about 130.0692123448.
The cubic root of 16918 is about 25.6714070816.
The spelling of 16918 in words is "sixteen thousand, nine hundred eighteen".