198305802973 has 4 divisors (see below), whose sum is σ = 205143934140. Its totient is φ = 191467671808.

The previous prime is 198305802953. The next prime is 198305802991. The reversal of 198305802973 is 379208503891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60458449689 + 137847353284 = 245883^2 + 371278^2 .

It is a cyclic number.

It is not a de Polignac number, because 198305802973 - 2¹⁷ = 198305671901 is a prime.

It is a super-3 number, since 3×198305802973³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198305802953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3419065540 + ... + 3419065597.

It is an arithmetic number, because the mean of its divisors is an integer number (51285983535).

Almost surely, 2^198305802973 is an apocalyptic number.

It is an amenable number.

198305802973 is a deficient number, since it is larger than the sum of its proper divisors (6838131167).

198305802973 is an equidigital number, since it uses as much as digits as its factorization.

198305802973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6838131166.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 198305802973 in words is "one hundred ninety-eight billion, three hundred five million, eight hundred two thousand, nine hundred seventy-three".