18068005 has 4 divisors (see below), whose sum is σ = 21681612. Its totient is φ = 14454400.

The previous prime is 18067999. The next prime is 18068023. The reversal of 18068005 is 50086081.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7628644 + 10439361 = 2762^2 + 3231^2 .

It is not a de Polignac number, because 18068005 - 2³ = 18067997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1806796 + ... + 1806805.

It is an arithmetic number, because the mean of its divisors is an integer number (5420403).

Almost surely, 2^18068005 is an apocalyptic number.

It is an amenable number.

18068005 is a deficient number, since it is larger than the sum of its proper divisors (3613607).

18068005 is an equidigital number, since it uses as much as digits as its factorization.

18068005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613606.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 18068005 is about 4250.6475977197. The cubic root of 18068005 is about 262.4037682029.

The spelling of 18068005 in words is "eighteen million, sixty-eight thousand, five".