198616172 has 12 divisors (see below), whose sum is σ = 354973920. Its totient is φ = 97195056.

The previous prime is 198616169. The next prime is 198616193. The reversal of 198616172 is 271616891.

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, 528047 + ... + 528422.

It is an arithmetic number, because the mean of its divisors is an integer number (29581160).

Almost surely, 2^198616172 is an apocalyptic number.

It is an amenable number.

198616172 is a deficient number, since it is larger than the sum of its proper divisors (156357748).

198616172 is a wasteful number, since it uses less digits than its factorization.

198616172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056520 (or 1056518 counting only the distinct ones).

The product of its digits is 36288, while the sum is 41.

The square root of 198616172 is about 14093.1249905761. The cubic root of 198616172 is about 583.4516456257.

The spelling of 198616172 in words is "one hundred ninety-eight million, six hundred sixteen thousand, one hundred seventy-two".