18196 has 6 divisors (see below), whose sum is σ = 31850. Its totient is φ = 9096.

The previous prime is 18191. The next prime is 18199. The reversal of 18196 is 69181.

It can be written as a sum of positive squares in only one way, i.e., 16900 + 1296 = 130^2 + 36^2 .

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 18196.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2271 + ... + 2278.

2¹⁸¹⁹⁶ is an apocalyptic number.

It is an amenable number.

18196 is a deficient number, since it is larger than the sum of its proper divisors (13654).

18196 is a wasteful number, since it uses less digits than its factorization.

18196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553 (or 4551 counting only the distinct ones).

The product of its digits is 432, while the sum is 25.

The square root of 18196 is about 134.8925498313. The cubic root of 18196 is about 26.3021939598.

The spelling of 18196 in words is "eighteen thousand, one hundred ninety-six".