198113305 has 16 divisors (see below), whose sum is σ = 259850304. Its totient is φ = 144112320.

The previous prime is 198113303. The next prime is 198113309. The reversal of 198113305 is 503311891.

It is not a de Polignac number, because 198113305 - 2¹ = 198113303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198113303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18391 + ... + 27100.

It is an arithmetic number, because the mean of its divisors is an integer number (16240644).

Almost surely, 2^198113305 is an apocalyptic number.

It is an amenable number.

198113305 is a deficient number, since it is larger than the sum of its proper divisors (61736999).

198113305 is a wasteful number, since it uses less digits than its factorization.

198113305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45576.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 198113305 is about 14075.2728215122. The cubic root of 198113305 is about 582.9588248270.

The spelling of 198113305 in words is "one hundred ninety-eight million, one hundred thirteen thousand, three hundred five".