18384316 has 6 divisors (see below), whose sum is σ = 32172560. Its totient is φ = 9192156.

The previous prime is 18384307. The next prime is 18384319. The reversal of 18384316 is 61348381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18384319) by changing a digit.

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 as a sum of consecutive naturals, namely, 2298036 + ... + 2298043.

Almost surely, 2^18384316 is an apocalyptic number.

It is an amenable number.

18384316 is a deficient number, since it is larger than the sum of its proper divisors (13788244).

18384316 is a wasteful number, since it uses less digits than its factorization.

18384316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4596083 (or 4596081 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 18384316 is about 4287.6935524825. The cubic root of 18384316 is about 263.9261922536.

The spelling of 18384316 in words is "eighteen million, three hundred eighty-four thousand, three hundred sixteen".