198261085 has 8 divisors (see below), whose sum is σ = 259541856. Its totient is φ = 144189840.

The previous prime is 198261083. The next prime is 198261131. The reversal of 198261085 is 580162891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 198261085 - 2¹ = 198261083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198261083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1802319 + ... + 1802428.

It is an arithmetic number, because the mean of its divisors is an integer number (32442732).

Almost surely, 2^198261085 is an apocalyptic number.

It is an amenable number.

198261085 is a deficient number, since it is larger than the sum of its proper divisors (61280771).

198261085 is a wasteful number, since it uses less digits than its factorization.

198261085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604763.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 198261085 is about 14080.5214747182. The cubic root of 198261085 is about 583.1037389428.

The spelling of 198261085 in words is "one hundred ninety-eight million, two hundred sixty-one thousand, eighty-five".