19473564804 has 48 divisors (see below), whose sum is σ = 48266015616. Its totient is φ = 6089689600.

The previous prime is 19473564769. The next prime is 19473564809. The reversal of 19473564804 is 40846537491.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (19473564809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90027 + ... + 216914.

It is an arithmetic number, because the mean of its divisors is an integer number (1005541992).

Almost surely, 2^19473564804 is an apocalyptic number.

It is an amenable number.

19473564804 is an abundant number, since it is smaller than the sum of its proper divisors (28792450812).

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

19473564804 is a wasteful number, since it uses less digits than its factorization.

19473564804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307276 (or 307274 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 19473564804 in words is "nineteen billion, four hundred seventy-three million, five hundred sixty-four thousand, eight hundred four".