18009927219 has 8 divisors (see below), whose sum is σ = 24014068672. Its totient is φ = 12006201960.

The previous prime is 18009927203. The next prime is 18009927259. The reversal of 18009927219 is 91272990081.

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

It is not a de Polignac number, because 18009927219 - 2⁴ = 18009927203 is a prime.

It is a super-3 number, since 3×18009927219³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18009927259) 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, 17064 + ... + 190554.

It is an arithmetic number, because the mean of its divisors is an integer number (3001758584).

Almost surely, 2^18009927219 is an apocalyptic number.

18009927219 is a deficient number, since it is larger than the sum of its proper divisors (6004141453).

18009927219 is a wasteful number, since it uses less digits than its factorization.

18009927219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208097.

The product of its (nonzero) digits is 163296, while the sum is 48.

The spelling of 18009927219 in words is "eighteen billion, nine million, nine hundred twenty-seven thousand, two hundred nineteen".