18974 has 8 divisors (see below), whose sum is σ = 29160. Its totient is φ = 9256.

The previous prime is 18973. The next prime is 18979. The reversal of 18974 is 47981.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18973) 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, 17 + ... + 195.

It is an arithmetic number, because the mean of its divisors is an integer number (3645).

2¹⁸⁹⁷⁴ is an apocalyptic number.

18974 is a deficient number, since it is larger than the sum of its proper divisors (10186).

18974 is a wasteful number, since it uses less digits than its factorization.

18974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234.

The product of its digits is 2016, while the sum is 29.

The square root of 18974 is about 137.7461433217. The cubic root of 18974 is about 26.6718392744.

The spelling of 18974 in words is "eighteen thousand, nine hundred seventy-four".