18922421907019 has 8 divisors (see below), whose sum is σ = 18942047055360. Its totient is φ = 18902806673856.

The previous prime is 18922421906977. The next prime is 18922421907091. The reversal of 18922421907019 is 91070912422981.

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 18922421907019 - 2³¹ = 18920274423371 is a prime.

It is a super-3 number, since 3×18922421907019³ (a number of 41 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 (18922421907419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1343097 + ... + 6296725.

It is an arithmetic number, because the mean of its divisors is an integer number (2367755881920).

Almost surely, 2^{18922421907019} is an apocalyptic number.

18922421907019 is a deficient number, since it is larger than the sum of its proper divisors (19625148341).

18922421907019 is a wasteful number, since it uses less digits than its factorization.

18922421907019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4957589.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The spelling of 18922421907019 in words is "eighteen trillion, nine hundred twenty-two billion, four hundred twenty-one million, nine hundred seven thousand, nineteen".