198005185 has 32 divisors (see below), whose sum is σ = 282205440. Its totient is φ = 130491648.

The previous prime is 198005179. The next prime is 198005189. The reversal of 198005185 is 581500891.

198005185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198005185 - 2⁹ = 198004673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198005189) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378334 + ... + 378856.

It is an arithmetic number, because the mean of its divisors is an integer number (8818920).

Almost surely, 2^198005185 is an apocalyptic number.

It is an amenable number.

198005185 is a deficient number, since it is larger than the sum of its proper divisors (84200255).

198005185 is a wasteful number, since it uses less digits than its factorization.

198005185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937.

The product of its (nonzero) digits is 14400, while the sum is 37.

The square root of 198005185 is about 14071.4315192165. The cubic root of 198005185 is about 582.8527559325.

The spelling of 198005185 in words is "one hundred ninety-eight million, five thousand, one hundred eighty-five".