18144065 has 8 divisors (see below), whose sum is σ = 22279488. Its totient is φ = 14177520.

The previous prime is 18144059. The next prime is 18144089. The reversal of 18144065 is 56044181.

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

It is not a de Polignac number, because 18144065 - 2⁶ = 18144001 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 41981 + ... + 42410.

It is an arithmetic number, because the mean of its divisors is an integer number (2784936).

Almost surely, 2^18144065 is an apocalyptic number.

It is an amenable number.

18144065 is a deficient number, since it is larger than the sum of its proper divisors (4135423).

18144065 is an equidigital number, since it uses as much as digits as its factorization.

18144065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84439.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 18144065 is about 4259.5850736897. The cubic root of 18144065 is about 262.7714621812.

The spelling of 18144065 in words is "eighteen million, one hundred forty-four thousand, sixty-five".