13618 has 8 divisors (see below), whose sum is σ = 22320. Its totient is φ = 6180.

The previous prime is 13613. The next prime is 13619. The reversal of 13618 is 81631.

13618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 13595 and 13604.

It is not an unprimeable number, because it can be changed into a prime (13613) 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 in 3 ways as a sum of consecutive naturals, for example, 288 + ... + 331.

It is an arithmetic number, because the mean of its divisors is an integer number (2790).

2¹³⁶¹⁸ is an apocalyptic number.

13618 is a deficient number, since it is larger than the sum of its proper divisors (8702).

13618 is a wasteful number, since it uses less digits than its factorization.

13618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632.

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

The square root of 13618 is about 116.6961867415. The cubic root of 13618 is about 23.8801899301.

It can be divided in two parts, 1361 and 8, that added together give a square (1369 = 37²).

The spelling of 13618 in words is "thirteen thousand, six hundred eighteen".