19817346047 has 8 divisors (see below), whose sum is σ = 21066904560. Its totient is φ = 18588441600.

The previous prime is 19817346019. The next prime is 19817346053. The reversal of 19817346047 is 74064371891.

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 19817346047 - 2⁶ = 19817345983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19817345986 and 19817346004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19817346007) 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, 5161538 + ... + 5165375.

It is an arithmetic number, because the mean of its divisors is an integer number (2633363070).

Almost surely, 2^19817346047 is an apocalyptic number.

19817346047 is a deficient number, since it is larger than the sum of its proper divisors (1249558513).

19817346047 is a wasteful number, since it uses less digits than its factorization.

19817346047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10327033.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 19817346047 in words is "nineteen billion, eight hundred seventeen million, three hundred forty-six thousand, forty-seven".