19805884532 has 12 divisors (see below), whose sum is σ = 39611769120. Its totient is φ = 8488236216.

The previous prime is 19805884477. The next prime is 19805884589. The reversal of 19805884532 is 23548850891.

19805884532 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353676482 + ... + 353676537.

It is an arithmetic number, because the mean of its divisors is an integer number (3300980760).

Almost surely, 2^19805884532 is an apocalyptic number.

It is an amenable number.

19805884532 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19805884532 is a wasteful number, since it uses less digits than its factorization.

19805884532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707353030 (or 707353028 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 53.

The spelling of 19805884532 in words is "nineteen billion, eight hundred five million, eight hundred eighty-four thousand, five hundred thirty-two".