19118455473 has 8 divisors (see below), whose sum is σ = 27452141248. Its totient is φ = 11765203344.

The previous prime is 19118455441. The next prime is 19118455529. The reversal of 19118455473 is 37455481191.

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

It is not a de Polignac number, because 19118455473 - 2⁵ = 19118455441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19118455373) 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, 245108365 + ... + 245108442.

It is an arithmetic number, because the mean of its divisors is an integer number (3431517656).

Almost surely, 2^19118455473 is an apocalyptic number.

19118455473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19118455473 is a deficient number, since it is larger than the sum of its proper divisors (8333685775).

19118455473 is a wasteful number, since it uses less digits than its factorization.

19118455473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490216823.

The product of its digits is 604800, while the sum is 48.

The spelling of 19118455473 in words is "nineteen billion, one hundred eighteen million, four hundred fifty-five thousand, four hundred seventy-three".