183998 has 8 divisors (see below), whose sum is σ = 277992. Its totient is φ = 91336.

The previous prime is 183979. The next prime is 184003. The reversal of 183998 is 899381.

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

It is a congruent number.

It is an unprimeable number.

183998 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 in 3 ways as a sum of consecutive naturals, for example, 161 + ... + 627.

It is an arithmetic number, because the mean of its divisors is an integer number (34749).

2¹⁸³⁹⁹⁸ is an apocalyptic number.

183998 is a deficient number, since it is larger than the sum of its proper divisors (93994).

183998 is a wasteful number, since it uses less digits than its factorization.

183998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666.

The product of its digits is 15552, while the sum is 38.

The square root of 183998 is about 428.9498805222. The cubic root of 183998 is about 56.8771335190.

The spelling of 183998 in words is "one hundred eighty-three thousand, nine hundred ninety-eight".