18384836 has 12 divisors (see below), whose sum is σ = 32309760. Its totient is φ = 9153480.

The previous prime is 18384833. The next prime is 18384841. The reversal of 18384836 is 63848381.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18384793 and 18384802.

It is not an unprimeable number, because it can be changed into a prime (18384833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8660 + ... + 10571.

It is an arithmetic number, because the mean of its divisors is an integer number (2692480).

Almost surely, 2^18384836 is an apocalyptic number.

It is an amenable number.

18384836 is a deficient number, since it is larger than the sum of its proper divisors (13924924).

18384836 is a wasteful number, since it uses less digits than its factorization.

18384836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19474 (or 19472 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 18384836 is about 4287.7541907157. The cubic root of 18384836 is about 263.9286806124.

The spelling of 18384836 in words is "eighteen million, three hundred eighty-four thousand, eight hundred thirty-six".