19808043960 has 64 divisors (see below), whose sum is σ = 61341050880. Its totient is φ = 5111752320.

The previous prime is 19808043953. The next prime is 19808043961. The reversal of 19808043960 is 6934080891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19808043961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2658652 + ... + 2666091.

It is an arithmetic number, because the mean of its divisors is an integer number (958453920).

Almost surely, 2^19808043960 is an apocalyptic number.

19808043960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19808043960 is an abundant number, since it is smaller than the sum of its proper divisors (41533006920).

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

19808043960 is a wasteful number, since it uses less digits than its factorization.

19808043960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5324788 (or 5324784 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 19808043960 in words is "nineteen billion, eight hundred eight million, forty-three thousand, nine hundred sixty".