198708400983 has 16 divisors (see below), whose sum is σ = 277940851200. Its totient is φ = 126102785760.

The previous prime is 198708400937. The next prime is 198708400997. The reversal of 198708400983 is 389004807891.

It is not a de Polignac number, because 198708400983 - 2²⁰ = 198707352407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198708400903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16078363 + ... + 16090716.

It is an arithmetic number, because the mean of its divisors is an integer number (17371303200).

Almost surely, 2^198708400983 is an apocalyptic number.

198708400983 is a deficient number, since it is larger than the sum of its proper divisors (79232450217).

198708400983 is a wasteful number, since it uses less digits than its factorization.

198708400983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32169182.

The product of its (nonzero) digits is 3483648, while the sum is 57.

The spelling of 198708400983 in words is "one hundred ninety-eight billion, seven hundred eight million, four hundred thousand, nine hundred eighty-three".