985431198 has 8 divisors (see below), whose sum is σ = 1970862408. Its totient is φ = 328477064.

The previous prime is 985431191. The next prime is 985431203. The reversal of 985431198 is 891134589.

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

985431198 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985431191) by changing a digit.

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, 82119261 + ... + 82119272.

It is an arithmetic number, because the mean of its divisors is an integer number (246357801).

Almost surely, 2^985431198 is an apocalyptic number.

985431198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

985431198 is a wasteful number, since it uses less digits than its factorization.

985431198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164238538.

The product of its digits is 311040, while the sum is 48.

The square root of 985431198 is about 31391.5784566498. The cubic root of 985431198 is about 995.1199565820.

The spelling of 985431198 in words is "nine hundred eighty-five million, four hundred thirty-one thousand, one hundred ninety-eight".