198473188 has 6 divisors (see below), whose sum is σ = 347328086. Its totient is φ = 99236592.

The previous prime is 198473179. The next prime is 198473189. The reversal of 198473188 is 881374891.

It can be written as a sum of positive squares in only one way, i.e., 198471744 + 1444 = 14088^2 + 38^2 .

It is not an unprimeable number, because it can be changed into a prime (198473189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24809145 + ... + 24809152.

Almost surely, 2^198473188 is an apocalyptic number.

It is an amenable number.

198473188 is a deficient number, since it is larger than the sum of its proper divisors (148854898).

198473188 is a wasteful number, since it uses less digits than its factorization.

198473188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49618301 (or 49618299 counting only the distinct ones).

The product of its digits is 387072, while the sum is 49.

The square root of 198473188 is about 14088.0512491970. The cubic root of 198473188 is about 583.3116028549.

The spelling of 198473188 in words is "one hundred ninety-eight million, four hundred seventy-three thousand, one hundred eighty-eight".