16018 has 4 divisors (see below), whose sum is σ = 24030. Its totient is φ = 8008.

The previous prime is 16007. The next prime is 16033. The reversal of 16018 is 81061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81061 = 103 ⋅787.

It can be written as a sum of positive squares in only one way, i.e., 12769 + 3249 = 113^2 + 57^2 .

16018 is a modest number, since divided by 18 gives 16 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 15992 and 16010.

It is an unprimeable number.

16018 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4003 + ... + 4006.

2¹⁶⁰¹⁸ is an apocalyptic number.

16018 is a deficient number, since it is larger than the sum of its proper divisors (8012).

16018 is an equidigital number, since it uses as much as digits as its factorization.

16018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8011.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 16018 is about 126.5622376540. The cubic root of 16018 is about 25.2078668645.

Adding to 16018 its reverse (81061), we get a palindrome (97079).

The spelling of 16018 in words is "sixteen thousand, eighteen".