19481426804 has 24 divisors (see below), whose sum is σ = 39400643520. Its totient is φ = 8255370816.

The previous prime is 19481426779. The next prime is 19481426837. The reversal of 19481426804 is 40862418491.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3906302 + ... + 3911285.

It is an arithmetic number, because the mean of its divisors is an integer number (1641693480).

Almost surely, 2^19481426804 is an apocalyptic number.

19481426804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19481426804 is an abundant number, since it is smaller than the sum of its proper divisors (19919216716).

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

19481426804 is a wasteful number, since it uses less digits than its factorization.

19481426804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7817687 (or 7817685 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 47.

The spelling of 19481426804 in words is "nineteen billion, four hundred eighty-one million, four hundred twenty-six thousand, eight hundred four".