19628487473 has 8 divisors (see below), whose sum is σ = 22890364800. Its totient is φ = 16824417540.

The previous prime is 19628487469. The next prime is 19628487481. The reversal of 19628487473 is 37478482691.

It is not a de Polignac number, because 19628487473 - 2² = 19628487469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19628487443) 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, 28612613 + ... + 28613298.

It is an arithmetic number, because the mean of its divisors is an integer number (2861295600).

Almost surely, 2^19628487473 is an apocalyptic number.

It is an amenable number.

19628487473 is a deficient number, since it is larger than the sum of its proper divisors (3261877327).

19628487473 is an frugal number, since it uses more digits than its factorization.

19628487473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57225932 (or 57225918 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 59.

The spelling of 19628487473 in words is "nineteen billion, six hundred twenty-eight million, four hundred eighty-seven thousand, four hundred seventy-three".