19019827469 has 8 divisors (see below), whose sum is σ = 20023782240. Its totient is φ = 18016163856.

The previous prime is 19019827447. The next prime is 19019827523. The reversal of 19019827469 is 96472891091.

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 19019827469 - 2²⁰ = 19018778893 is a prime.

It is a super-3 number, since 3×19019827469³ (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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19019827969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68342 + ... + 206664.

It is an arithmetic number, because the mean of its divisors is an integer number (2502972780).

Almost surely, 2^19019827469 is an apocalyptic number.

19019827469 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19019827469 is a deficient number, since it is larger than the sum of its proper divisors (1003954771).

19019827469 is a wasteful number, since it uses less digits than its factorization.

19019827469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145579.

The product of its (nonzero) digits is 1959552, while the sum is 56.

The spelling of 19019827469 in words is "nineteen billion, nineteen million, eight hundred twenty-seven thousand, four hundred sixty-nine".