198148165 has 8 divisors (see below), whose sum is σ = 238121208. Its totient is φ = 158289600.

The previous prime is 198148133. The next prime is 198148177. The reversal of 198148165 is 561841891.

It can be written as a sum of positive squares in 4 ways, for example, as 9278116 + 188870049 = 3046^2 + 13743^2 .

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

It is not a de Polignac number, because 198148165 - 2⁵ = 198148133 is a prime.

It is a super-3 number, since 3×198148165³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24762 + ... + 31771.

It is an arithmetic number, because the mean of its divisors is an integer number (29765151).

Almost surely, 2^198148165 is an apocalyptic number.

It is an amenable number.

198148165 is a deficient number, since it is larger than the sum of its proper divisors (39973043).

198148165 is an equidigital number, since it uses as much as digits as its factorization.

198148165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57239.

The product of its digits is 69120, while the sum is 43.

The square root of 198148165 is about 14076.5111089360. The cubic root of 198148165 is about 582.9930152831.

The spelling of 198148165 in words is "one hundred ninety-eight million, one hundred forty-eight thousand, one hundred sixty-five".