18950 has 12 divisors (see below), whose sum is σ = 35340. Its totient is φ = 7560.

The previous prime is 18947. The next prime is 18959. The reversal of 18950 is 5981.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 18950.

It is not an unprimeable number, because it can be changed into a prime (18959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140 + ... + 239.

It is an arithmetic number, because the mean of its divisors is an integer number (2945).

2¹⁸⁹⁵⁰ is an apocalyptic number.

18950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18950 is a deficient number, since it is larger than the sum of its proper divisors (16390).

18950 is a wasteful number, since it uses less digits than its factorization.

18950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 18950 is about 137.6589989794. The cubic root of 18950 is about 26.6605888927.

The spelling of 18950 in words is "eighteen thousand, nine hundred fifty".