18068135 has 12 divisors (see below), whose sum is σ = 21952632. Its totient is φ = 14275968.

The previous prime is 18068033. The next prime is 18068137. The reversal of 18068135 is 53186081.

It is a de Polignac number, because none of the positive numbers 2^k-18068135 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18068137) 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 11 ways as a sum of consecutive naturals, for example, 63704 + ... + 63986.

It is an arithmetic number, because the mean of its divisors is an integer number (1829386).

Almost surely, 2^18068135 is an apocalyptic number.

18068135 is a deficient number, since it is larger than the sum of its proper divisors (3884497).

18068135 is an equidigital number, since it uses as much as digits as its factorization.

18068135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 18068135 is about 4250.6628894797. The cubic root of 18068135 is about 262.4043975365.

The spelling of 18068135 in words is "eighteen million, sixty-eight thousand, one hundred thirty-five".