18069 has 8 divisors (see below), whose sum is σ = 25440. Its totient is φ = 11376.

The previous prime is 18061. The next prime is 18077. The reversal of 18069 is 96081.

It is an interprime number because it is at equal distance from previous prime (18061) and next prime (18077).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18069 - 2³ = 18061 is a prime.

It is a super-2 number, since 2×18069² = 652977522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18061) 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 7 ways as a sum of consecutive naturals, for example, 102 + ... + 215.

It is an arithmetic number, because the mean of its divisors is an integer number (3180).

2¹⁸⁰⁶⁹ is an apocalyptic number.

18069 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

18069 is a deficient number, since it is larger than the sum of its proper divisors (7371).

18069 is a wasteful number, since it uses less digits than its factorization.

18069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 18069 is about 134.4209805053. The cubic root of 18069 is about 26.2408584949.

The spelling of 18069 in words is "eighteen thousand, sixty-nine".