198103685 has 16 divisors (see below), whose sum is σ = 258368880. Its totient is φ = 144944640.

The previous prime is 198103681. The next prime is 198103691. The reversal of 198103685 is 586301891.

It can be written as a sum of positive squares in 8 ways, for example, as 17926756 + 180176929 = 4234^2 + 13423^2 .

It is not a de Polignac number, because 198103685 - 2² = 198103681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198103681) 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, 6896 + ... + 21065.

It is an arithmetic number, because the mean of its divisors is an integer number (16148055).

Almost surely, 2^198103685 is an apocalyptic number.

It is an amenable number.

198103685 is a deficient number, since it is larger than the sum of its proper divisors (60265195).

198103685 is a wasteful number, since it uses less digits than its factorization.

198103685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28088.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 198103685 is about 14074.9310833126. The cubic root of 198103685 is about 582.9493888888.

The spelling of 198103685 in words is "one hundred ninety-eight million, one hundred three thousand, six hundred eighty-five".