18384005 has 16 divisors (see below), whose sum is σ = 23193984. Its totient is φ = 13970880.

The previous prime is 18383977. The next prime is 18384007. The reversal of 18384005 is 50048381.

It is not a de Polignac number, because 18384005 - 2¹⁴ = 18367621 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18384007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6800 + ... + 9110.

It is an arithmetic number, because the mean of its divisors is an integer number (1449624).

Almost surely, 2^18384005 is an apocalyptic number.

It is an amenable number.

18384005 is a deficient number, since it is larger than the sum of its proper divisors (4809979).

18384005 is a wasteful number, since it uses less digits than its factorization.

18384005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 18384005 is about 4287.6572857447. The cubic root of 18384005 is about 263.9247040012.

The spelling of 18384005 in words is "eighteen million, three hundred eighty-four thousand, five".