19118 has 12 divisors (see below), whose sum is σ = 31920. Its totient is φ = 8580.

The previous prime is 19087. The next prime is 19121. The reversal of 19118 is 81191.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 19118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203 + ... + 281.

It is an arithmetic number, because the mean of its divisors is an integer number (2660).

2¹⁹¹¹⁸ is an apocalyptic number.

19118 is a deficient number, since it is larger than the sum of its proper divisors (12802).

19118 is a wasteful number, since it uses less digits than its factorization.

19118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 92 counting only the distinct ones).

The product of its digits is 72, while the sum is 20.

The square root of 19118 is about 138.2678559897. The cubic root of 19118 is about 26.7391431180.

It can be divided in two parts, 1 and 9118, that added together give a palindrome (9119).

The spelling of 19118 in words is "nineteen thousand, one hundred eighteen".