18934 has 4 divisors (see below), whose sum is σ = 28404. Its totient is φ = 9466.

The previous prime is 18919. The next prime is 18947. The reversal of 18934 is 43981.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 18899 and 18908.

It is a congruent number.

It is an unprimeable number.

18934 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4732 + ... + 4735.

It is an arithmetic number, because the mean of its divisors is an integer number (7101).

2¹⁸⁹³⁴ is an apocalyptic number.

18934 is a deficient number, since it is larger than the sum of its proper divisors (9470).

18934 is an equidigital number, since it uses as much as digits as its factorization.

18934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9469.

The product of its digits is 864, while the sum is 25.

The square root of 18934 is about 137.6008720903. The cubic root of 18934 is about 26.6530833600.

The spelling of 18934 in words is "eighteen thousand, nine hundred thirty-four".