18316330 has 8 divisors (see below), whose sum is σ = 32969412. Its totient is φ = 7326528.

The previous prime is 18316307. The next prime is 18316339. The reversal of 18316330 is 3361381.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16736281 + 1580049 = 4091^2 + 1257^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18316295 and 18316304.

It is not an unprimeable number, because it can be changed into a prime (18316339) 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 in 3 ways as a sum of consecutive naturals, for example, 915807 + ... + 915826.

Almost surely, 2^18316330 is an apocalyptic number.

18316330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18316330 is a deficient number, since it is larger than the sum of its proper divisors (14653082).

18316330 is a wasteful number, since it uses less digits than its factorization.

18316330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831640.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 18316330 is about 4279.7581707382. The cubic root of 18316330 is about 263.6004535458.

The spelling of 18316330 in words is "eighteen million, three hundred sixteen thousand, three hundred thirty".