19471442169 has 8 divisors (see below), whose sum is σ = 25977210400. Its totient is φ = 12973317696.

The previous prime is 19471442077. The next prime is 19471442171. The reversal of 19471442169 is 96124417491.

It is a happy number.

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

It is not a de Polignac number, because 19471442169 - 2²⁴ = 19454664953 is a prime.

It is a super-2 number, since 2×19471442169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19471442369) 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, 1904992 + ... + 1915185.

It is an arithmetic number, because the mean of its divisors is an integer number (3247151300).

Almost surely, 2^19471442169 is an apocalyptic number.

It is an amenable number.

19471442169 is a deficient number, since it is larger than the sum of its proper divisors (6505768231).

19471442169 is a wasteful number, since it uses less digits than its factorization.

19471442169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821879.

The product of its digits is 435456, while the sum is 48.

The spelling of 19471442169 in words is "nineteen billion, four hundred seventy-one million, four hundred forty-two thousand, one hundred sixty-nine".