18385135 has 8 divisors (see below), whose sum is σ = 22391856. Its totient is φ = 14488320.

The previous prime is 18385121. The next prime is 18385151. The reversal of 18385135 is 53158381.

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

It is a de Polignac number, because none of the positive numbers 2^k-18385135 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 18385135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27106 + ... + 27775.

It is an arithmetic number, because the mean of its divisors is an integer number (2798982).

Almost surely, 2^18385135 is an apocalyptic number.

18385135 is a deficient number, since it is larger than the sum of its proper divisors (4006721).

18385135 is an equidigital number, since it uses as much as digits as its factorization.

18385135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54953.

The product of its digits is 14400, while the sum is 34.

The square root of 18385135 is about 4287.7890573115. The cubic root of 18385135 is about 263.9301113975.

The spelling of 18385135 in words is "eighteen million, three hundred eighty-five thousand, one hundred thirty-five".