198834844983 has 4 divisors (see below), whose sum is σ = 265113126648. Its totient is φ = 132556563320.

The previous prime is 198834844981. The next prime is 198834844987. The reversal of 198834844983 is 389448438891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389448438891 = 3 ⋅129816146297.

It is a cyclic number.

It is not a de Polignac number, because 198834844983 - 2¹ = 198834844981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198834844981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33139140828 + ... + 33139140833.

It is an arithmetic number, because the mean of its divisors is an integer number (66278281662).

Almost surely, 2^198834844983 is an apocalyptic number.

198834844983 is a deficient number, since it is larger than the sum of its proper divisors (66278281665).

198834844983 is an equidigital number, since it uses as much as digits as its factorization.

198834844983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66278281664.

The product of its digits is 191102976, while the sum is 69.

The spelling of 198834844983 in words is "one hundred ninety-eight billion, eight hundred thirty-four million, eight hundred forty-four thousand, nine hundred eighty-three".