18850384 has 40 divisors (see below), whose sum is σ = 42640128. Its totient is φ = 7904640.

The previous prime is 18850373. The next prime is 18850393. The reversal of 18850384 is 48305881.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3474 + ... + 7054.

Almost surely, 2^18850384 is an apocalyptic number.

18850384 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18850384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21320064).

18850384 is an abundant number, since it is smaller than the sum of its proper divisors (23789744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18850384 is a wasteful number, since it uses less digits than its factorization.

18850384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3643 (or 3637 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 18850384 is about 4341.7028917235. The cubic root of 18850384 is about 266.1379050124.

The spelling of 18850384 in words is "eighteen million, eight hundred fifty thousand, three hundred eighty-four".