18485384 has 16 divisors (see below), whose sum is σ = 34765200. Its totient is φ = 9214672.

The previous prime is 18485381. The next prime is 18485407. The reversal of 18485384 is 48358481.

It is not an unprimeable number, because it can be changed into a prime (18485381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554 + ... + 6105.

It is an arithmetic number, because the mean of its divisors is an integer number (2172825).

Almost surely, 2^18485384 is an apocalyptic number.

It is an amenable number.

18485384 is a deficient number, since it is larger than the sum of its proper divisors (16279816).

18485384 is a wasteful number, since it uses less digits than its factorization.

18485384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7012 (or 7008 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The square root of 18485384 is about 4299.4632223104. The cubic root of 18485384 is about 264.4089544811.

The spelling of 18485384 in words is "eighteen million, four hundred eighty-five thousand, three hundred eighty-four".