18315230 has 8 divisors (see below), whose sum is σ = 32967432. Its totient is φ = 7326088.

The previous prime is 18315217. The next prime is 18315251. The reversal of 18315230 is 3251381.

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

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 18315196 and 18315205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915752 + ... + 915771.

It is an arithmetic number, because the mean of its divisors is an integer number (4120929).

Almost surely, 2^18315230 is an apocalyptic number.

18315230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18315230 is a deficient number, since it is larger than the sum of its proper divisors (14652202).

18315230 is a wasteful number, since it uses less digits than its factorization.

18315230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831530.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 18315230 is about 4279.6296568745. The cubic root of 18315230 is about 263.5951765370.

The spelling of 18315230 in words is "eighteen million, three hundred fifteen thousand, two hundred thirty".