18136 has 8 divisors (see below), whose sum is σ = 34020. Its totient is φ = 9064.

The previous prime is 18133. The next prime is 18143. The reversal of 18136 is 63181.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1126 + ... + 1141.

2¹⁸¹³⁶ is an apocalyptic number.

It is an amenable number.

18136 is a deficient number, since it is larger than the sum of its proper divisors (15884).

18136 is a wasteful number, since it uses less digits than its factorization.

18136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273 (or 2269 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 18136 is about 134.6699669563. The cubic root of 18136 is about 26.2732522618.

It can be divided in two parts, 1813 and 6, that multiplied together give a triangular number (10878 = T₁₄₇).

The spelling of 18136 in words is "eighteen thousand, one hundred thirty-six".