198985275 has 24 divisors (see below), whose sum is σ = 365544560. Its totient is φ = 106125120.

The previous prime is 198985261. The next prime is 198985307. The reversal of 198985275 is 572589891.

It is not a de Polignac number, because 198985275 - 2⁷ = 198985147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146722 + ... + 148071.

Almost surely, 2^198985275 is an apocalyptic number.

198985275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198985275 is a deficient number, since it is larger than the sum of its proper divisors (166559285).

198985275 is a wasteful number, since it uses less digits than its factorization.

198985275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294812 (or 294801 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 54.

The square root of 198985275 is about 14106.2140562236. The cubic root of 198985275 is about 583.8128456321.

The spelling of 198985275 in words is "one hundred ninety-eight million, nine hundred eighty-five thousand, two hundred seventy-five".