19804548474 has 24 divisors (see below), whose sum is σ = 43218564480. Its totient is φ = 6554022408.

The previous prime is 19804548457. The next prime is 19804548481. The reversal of 19804548474 is 47484540891.

19804548474 is a `hidden beast` number, since 1 + 98 + 0 + 4 + 5 + 484 + 74 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19804548474.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3955242 + ... + 3960245.

It is an arithmetic number, because the mean of its divisors is an integer number (1800773520).

Almost surely, 2^19804548474 is an apocalyptic number.

19804548474 is an abundant number, since it is smaller than the sum of its proper divisors (23414016006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19804548474 is a wasteful number, since it uses less digits than its factorization.

19804548474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7915634 (or 7915631 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 19804548474 in words is "nineteen billion, eight hundred four million, five hundred forty-eight thousand, four hundred seventy-four".