19147239471 has 8 divisors (see below), whose sum is σ = 25533247360. Its totient is φ = 12763028952.

The previous prime is 19147239469. The next prime is 19147239499. The reversal of 19147239471 is 17493274191.

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

It is not a de Polignac number, because 19147239471 - 2¹ = 19147239469 is a prime.

It is a super-3 number, since 3×19147239471³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19147239471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19147239271) 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, 424285 + ... + 467238.

It is an arithmetic number, because the mean of its divisors is an integer number (3191655920).

Almost surely, 2^19147239471 is an apocalyptic number.

19147239471 is a deficient number, since it is larger than the sum of its proper divisors (6386007889).

19147239471 is an equidigital number, since it uses as much as digits as its factorization.

19147239471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898685.

The product of its digits is 381024, while the sum is 48.

The spelling of 19147239471 in words is "nineteen billion, one hundred forty-seven million, two hundred thirty-nine thousand, four hundred seventy-one".