1998810350808 has 32 divisors (see below), whose sum is σ = 5045540697600. Its totient is φ = 659801474208.

The previous prime is 1998810350783. The next prime is 1998810350813. The reversal of 1998810350808 is 8080530188991.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 404287648 + ... + 404292591.

It is an arithmetic number, because the mean of its divisors is an integer number (157673146800).

Almost surely, 2^{1998810350808} is an apocalyptic number.

It is an amenable number.

1998810350808 is an abundant number, since it is smaller than the sum of its proper divisors (3046730346792).

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

1998810350808 is a wasteful number, since it uses less digits than its factorization.

1998810350808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808580351 (or 808580347 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 60.

The spelling of 1998810350808 in words is "one trillion, nine hundred ninety-eight billion, eight hundred ten million, three hundred fifty thousand, eight hundred eight".