18316736 has 14 divisors (see below), whose sum is σ = 36347400. Its totient is φ = 9158336.

The previous prime is 18316733. The next prime is 18316751. The reversal of 18316736 is 63761381.

It is a junction number, because it is equal to n+sod(n) for n = 18316696 and 18316705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18316733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143036 + ... + 143163.

Almost surely, 2^18316736 is an apocalyptic number.

18316736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18316736 is a deficient number, since it is larger than the sum of its proper divisors (18030664).

18316736 is an equidigital number, since it uses as much as digits as its factorization.

18316736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286211 (or 286201 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 18316736 is about 4279.8056030619. The cubic root of 18316736 is about 263.6024011884.

The spelling of 18316736 in words is "eighteen million, three hundred sixteen thousand, seven hundred thirty-six".