198457736668 has 12 divisors (see below), whose sum is σ = 353187497880. Its totient is φ = 97547022992.

The previous prime is 198457736651. The next prime is 198457736683. The reversal of 198457736668 is 866637754891.

198457736668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 198457736597 and 198457736606.

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 3 ways as a sum of consecutive naturals, for example, 420461071 + ... + 420461542.

It is an arithmetic number, because the mean of its divisors is an integer number (29432291490).

Almost surely, 2^198457736668 is an apocalyptic number.

It is an amenable number.

198457736668 is a deficient number, since it is larger than the sum of its proper divisors (154729761212).

198457736668 is a wasteful number, since it uses less digits than its factorization.

198457736668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840922676 (or 840922674 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 70.

The spelling of 198457736668 in words is "one hundred ninety-eight billion, four hundred fifty-seven million, seven hundred thirty-six thousand, six hundred sixty-eight".