198195965698 has 8 divisors (see below), whose sum is σ = 297526394880. Its totient is φ = 99020500740.

The previous prime is 198195965641. The next prime is 198195965711. The reversal of 198195965698 is 896569591891.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38737858 + ... + 38742973.

It is an arithmetic number, because the mean of its divisors is an integer number (37190799360).

Almost surely, 2^198195965698 is an apocalyptic number.

198195965698 is a deficient number, since it is larger than the sum of its proper divisors (99330429182).

198195965698 is a wasteful number, since it uses less digits than its factorization.

198195965698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77482112.

The product of its digits is 377913600, while the sum is 76.

The spelling of 198195965698 in words is "one hundred ninety-eight billion, one hundred ninety-five million, nine hundred sixty-five thousand, six hundred ninety-eight".