198488579172 has 24 divisors (see below), whose sum is σ = 498766173696. Its totient is φ = 61073408928.

The previous prime is 198488579153. The next prime is 198488579189. The reversal of 198488579172 is 271975884891.

It is a junction number, because it is equal to n+sod(n) for n = 198488579097 and 198488579106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636181188 + ... + 636181499.

It is an arithmetic number, because the mean of its divisors is an integer number (20781923904).

Almost surely, 2^198488579172 is an apocalyptic number.

198488579172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198488579172 is an abundant number, since it is smaller than the sum of its proper divisors (300277594524).

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

198488579172 is a wasteful number, since it uses less digits than its factorization.

198488579172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272362707 (or 1272362705 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 69.

The spelling of 198488579172 in words is "one hundred ninety-eight billion, four hundred eighty-eight million, five hundred seventy-nine thousand, one hundred seventy-two".