18132315 has 8 divisors (see below), whose sum is σ = 29011728. Its totient is φ = 9670560.

The previous prime is 18132299. The next prime is 18132343. The reversal of 18132315 is 51323181.

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

It is not a de Polignac number, because 18132315 - 2⁴ = 18132299 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 604396 + ... + 604425.

It is an arithmetic number, because the mean of its divisors is an integer number (3626466).

Almost surely, 2^18132315 is an apocalyptic number.

18132315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18132315 is a deficient number, since it is larger than the sum of its proper divisors (10879413).

18132315 is a wasteful number, since it uses less digits than its factorization.

18132315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208829.

The product of its digits is 720, while the sum is 24.

The square root of 18132315 is about 4258.2056079997. The cubic root of 18132315 is about 262.7147267984.

Adding to 18132315 its reverse (51323181), we get a palindrome (69455496).

The spelling of 18132315 in words is "eighteen million, one hundred thirty-two thousand, three hundred fifteen".