198818867058 has 64 divisors (see below), whose sum is σ = 497767368960. Its totient is φ = 51620308992.

The previous prime is 198818867057. The next prime is 198818867099. The reversal of 198818867058 is 850768818891.

198818867058 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 = 198818866983 and 198818867001.

It is not an unprimeable number, because it can be changed into a prime (198818867057) 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 31 ways as a sum of consecutive naturals, for example, 4780291 + ... + 4821702.

It is an arithmetic number, because the mean of its divisors is an integer number (7777615140).

Almost surely, 2^198818867058 is an apocalyptic number.

198818867058 is an abundant number, since it is smaller than the sum of its proper divisors (298948501902).

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

198818867058 is a wasteful number, since it uses less digits than its factorization.

198818867058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9602051.

The product of its (nonzero) digits is 61931520, while the sum is 69.

The spelling of 198818867058 in words is "one hundred ninety-eight billion, eight hundred eighteen million, eight hundred sixty-seven thousand, fifty-eight".