198099481 has 4 divisors (see below), whose sum is σ = 200060964. Its totient is φ = 196138000.

The previous prime is 198099469. The next prime is 198099497. The reversal of 198099481 is 184990891.

198099481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 181818256 + 16281225 = 13484^2 + 4035^2 .

It is a cyclic number.

It is not a de Polignac number, because 198099481 - 2⁵ = 198099449 is a prime.

It is a super-3 number, since 3×198099481³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198093481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 980590 + ... + 980791.

It is an arithmetic number, because the mean of its divisors is an integer number (50015241).

Almost surely, 2^198099481 is an apocalyptic number.

It is an amenable number.

198099481 is a deficient number, since it is larger than the sum of its proper divisors (1961483).

198099481 is a wasteful number, since it uses less digits than its factorization.

198099481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961482.

The product of its (nonzero) digits is 186624, while the sum is 49.

The square root of 198099481 is about 14074.7817389827. The cubic root of 198099481 is about 582.9452652291.

The spelling of 198099481 in words is "one hundred ninety-eight million, ninety-nine thousand, four hundred eighty-one".