198102947906 has 8 divisors (see below), whose sum is σ = 297170186940. Its totient is φ = 99046218928.

The previous prime is 198102947893. The next prime is 198102947941. The reversal of 198102947906 is 609749201891.

198102947906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 151781147281 + 46321800625 = 389591^2 + 215225^2 .

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

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, 2580221 + ... + 2655888.

Almost surely, 2^198102947906 is an apocalyptic number.

198102947906 is a deficient number, since it is larger than the sum of its proper divisors (99067239034).

198102947906 is a wasteful number, since it uses less digits than its factorization.

198102947906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5255028.

The product of its (nonzero) digits is 1959552, while the sum is 56.

The spelling of 198102947906 in words is "one hundred ninety-eight billion, one hundred two million, nine hundred forty-seven thousand, nine hundred six".