18841219 has 8 divisors (see below), whose sum is σ = 20374848. Its totient is φ = 17354880.

The previous prime is 18841189. The next prime is 18841241. The reversal of 18841219 is 91214881.

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 18841219 - 2⁵ = 18841187 is a prime.

It is a super-2 number, since 2×18841219² = 709983066811922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18841279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10992 + ... + 12589.

It is an arithmetic number, because the mean of its divisors is an integer number (2546856).

Almost surely, 2^18841219 is an apocalyptic number.

18841219 is a deficient number, since it is larger than the sum of its proper divisors (1533629).

18841219 is a wasteful number, since it uses less digits than its factorization.

18841219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23645.

The product of its digits is 4608, while the sum is 34.

The square root of 18841219 is about 4340.6473019585. The cubic root of 18841219 is about 266.0947662041.

The spelling of 18841219 in words is "eighteen million, eight hundred forty-one thousand, two hundred nineteen".