18675384 has 128 divisors (see below), whose sum is σ = 60963840. Its totient is φ = 4626432.

The previous prime is 18675383. The next prime is 18675389. The reversal of 18675384 is 48357681.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18675383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36877 + ... + 37379.

It is an arithmetic number, because the mean of its divisors is an integer number (476280).

Almost surely, 2^18675384 is an apocalyptic number.

18675384 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 18675384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30481920).

18675384 is an abundant number, since it is smaller than the sum of its proper divisors (42288456).

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

18675384 is a wasteful number, since it uses less digits than its factorization.

18675384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 545 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 18675384 is about 4321.5025164866. The cubic root of 18675384 is about 265.3117678715.

The spelling of 18675384 in words is "eighteen million, six hundred seventy-five thousand, three hundred eighty-four".