198135569 has 8 divisors (see below), whose sum is σ = 206046720. Its totient is φ = 190296400.

The previous prime is 198135517. The next prime is 198135589. The reversal of 198135569 is 965531891.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198135569 is a prime.

It is a super-3 number, since 3×198135569³ (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 (198135589) 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, 12347 + ... + 23424.

It is an arithmetic number, because the mean of its divisors is an integer number (25755840).

Almost surely, 2^198135569 is an apocalyptic number.

It is an amenable number.

198135569 is a deficient number, since it is larger than the sum of its proper divisors (7911151).

198135569 is a wasteful number, since it uses less digits than its factorization.

198135569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35991.

The product of its digits is 291600, while the sum is 47.

The square root of 198135569 is about 14076.0636898247. The cubic root of 198135569 is about 582.9806616728.

The spelling of 198135569 in words is "one hundred ninety-eight million, one hundred thirty-five thousand, five hundred sixty-nine".