18064219 has 8 divisors (see below), whose sum is σ = 18385920. Its totient is φ = 17745000.

The previous prime is 18064201. The next prime is 18064247. The reversal of 18064219 is 91246081.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18064219 - 2⁷ = 18064091 is a prime.

It is a super-2 number, since 2×18064219² = 652632016159922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18064259) 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 7 ways as a sum of consecutive naturals, for example, 19374 + ... + 20284.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 2^18064219 is an apocalyptic number.

18064219 is a deficient number, since it is larger than the sum of its proper divisors (321701).

18064219 is an equidigital number, since it uses as much as digits as its factorization.

18064219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 18064219 is about 4250.2022304827. The cubic root of 18064219 is about 262.3854387477.

The spelling of 18064219 in words is "eighteen million, sixty-four thousand, two hundred nineteen".