19804548473 has 4 divisors (see below), whose sum is σ = 20055239040. Its totient is φ = 19553857908.

The previous prime is 19804548457. The next prime is 19804548481. The reversal of 19804548473 is 37484540891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19804548473 - 2⁴ = 19804548457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19804548173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125345165 + ... + 125345322.

It is an arithmetic number, because the mean of its divisors is an integer number (5013809760).

Almost surely, 2^19804548473 is an apocalyptic number.

It is an amenable number.

19804548473 is a deficient number, since it is larger than the sum of its proper divisors (250690567).

19804548473 is an equidigital number, since it uses as much as digits as its factorization.

19804548473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250690566.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 19804548473 in words is "nineteen billion, eight hundred four million, five hundred forty-eight thousand, four hundred seventy-three".