198536913854 has 16 divisors (see below), whose sum is σ = 299401699248. Its totient is φ = 98737765632.

The previous prime is 198536913853. The next prime is 198536913863. The reversal of 198536913854 is 458319635891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198536913853) 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 7 ways as a sum of consecutive naturals, for example, 73892 + ... + 634455.

It is an arithmetic number, because the mean of its divisors is an integer number (18712606203).

Almost surely, 2^198536913854 is an apocalyptic number.

198536913854 is a deficient number, since it is larger than the sum of its proper divisors (100864785394).

198536913854 is a wasteful number, since it uses less digits than its factorization.

198536913854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709099.

The product of its digits is 27993600, while the sum is 62.

The spelling of 198536913854 in words is "one hundred ninety-eight billion, five hundred thirty-six million, nine hundred thirteen thousand, eight hundred fifty-four".