198555741 has 6 divisors (see below), whose sum is σ = 286802750. Its totient is φ = 132370488.

The previous prime is 198555697. The next prime is 198555821. The reversal of 198555741 is 147555891.

198555741 is a `hidden beast` number, since 1 + 98 + 5 + 557 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 197290116 + 1265625 = 14046^2 + 1125^2 .

It is not a de Polignac number, because 198555741 - 2¹⁴ = 198539357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198555241) 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 5 ways as a sum of consecutive naturals, for example, 11030866 + ... + 11030883.

Almost surely, 2^198555741 is an apocalyptic number.

It is an amenable number.

198555741 is a deficient number, since it is larger than the sum of its proper divisors (88247009).

198555741 is a wasteful number, since it uses less digits than its factorization.

198555741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22061755 (or 22061752 counting only the distinct ones).

The product of its digits is 252000, while the sum is 45.

The square root of 198555741 is about 14090.9808388203. The cubic root of 198555741 is about 583.3924659148.

The spelling of 198555741 in words is "one hundred ninety-eight million, five hundred fifty-five thousand, seven hundred forty-one".