198081938829 has 8 divisors (see below), whose sum is σ = 264270595680. Its totient is φ = 131973953936.

The previous prime is 198081938783. The next prime is 198081938833. The reversal of 198081938829 is 928839180891.

198081938829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198081938829 - 2⁹ = 198081938317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198081938829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198081930829) by changing a digit.

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, 20162259 + ... + 20172080.

It is an arithmetic number, because the mean of its divisors is an integer number (33033824460).

Almost surely, 2^198081938829 is an apocalyptic number.

It is an amenable number.

198081938829 is a deficient number, since it is larger than the sum of its proper divisors (66188656851).

198081938829 is a wasteful number, since it uses less digits than its factorization.

198081938829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40335979.

The product of its (nonzero) digits is 17915904, while the sum is 66.

The spelling of 198081938829 in words is "one hundred ninety-eight billion, eighty-one million, nine hundred thirty-eight thousand, eight hundred twenty-nine".