1998829244068 has 24 divisors (see below), whose sum is σ = 3501400896000. Its totient is φ = 998429331168.

The previous prime is 1998829244053. The next prime is 1998829244077. The reversal of 1998829244068 is 8604429288991.

It is a junction number, because it is equal to n+sod(n) for n = 1998829243988 and 1998829244006.

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, 25049338 + ... + 25129006.

It is an arithmetic number, because the mean of its divisors is an integer number (145891704000).

Almost surely, 2^{1998829244068} is an apocalyptic number.

It is an amenable number.

1998829244068 is a deficient number, since it is larger than the sum of its proper divisors (1502571651932).

1998829244068 is a wasteful number, since it uses less digits than its factorization.

1998829244068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85779 (or 85777 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 70.

The spelling of 1998829244068 in words is "one trillion, nine hundred ninety-eight billion, eight hundred twenty-nine million, two hundred forty-four thousand, sixty-eight".