198633265 has 8 divisors (see below), whose sum is σ = 238435560. Its totient is φ = 158856192.

The previous prime is 198633251. The next prime is 198633269. The reversal of 198633265 is 562336891.

It can be written as a sum of positive squares in 4 ways, for example, as 4532641 + 194100624 = 2129^2 + 13932^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 198633265 - 2¹¹ = 198631217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198633269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28177 + ... + 34513.

It is an arithmetic number, because the mean of its divisors is an integer number (29804445).

Almost surely, 2^198633265 is an apocalyptic number.

It is an amenable number.

198633265 is a deficient number, since it is larger than the sum of its proper divisors (39802295).

198633265 is an equidigital number, since it uses as much as digits as its factorization.

198633265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12611.

The product of its digits is 233280, while the sum is 43.

The square root of 198633265 is about 14093.7314079700. The cubic root of 198633265 is about 583.4683825188.

The spelling of 198633265 in words is "one hundred ninety-eight million, six hundred thirty-three thousand, two hundred sixty-five".