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BaseRepresentation
bin100011010101101
3220211010
410122231
51034333
6215433
7103515
oct43255
926733
1018093
1112659
12a579
13830a
146845
155563

18093 has 8 divisors (see below), whose sum is σ = 24928. Its totient is φ = 11664.

The previous prime is 18089. The next prime is 18097. The reversal of 18093 is 39081.

18093 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (18089) and next prime (18097).

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

It is not a de Polignac number, because 18093 - 22 = 18089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30 + ... + 192.

It is an arithmetic number, because the mean of its divisors is an integer number (3116).

218093 is an apocalyptic number.

It is an amenable number.

18093 is a deficient number, since it is larger than the sum of its proper divisors (6835).

18093 is a wasteful number, since it uses less digits than its factorization.

18093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 18093 is about 134.5102226598. The cubic root of 18093 is about 26.2524714226.

The spelling of 18093 in words is "eighteen thousand, ninety-three".

Divisors: 1 3 37 111 163 489 6031 18093