198556844 has 6 divisors (see below), whose sum is σ = 347474484. Its totient is φ = 99278420.

The previous prime is 198556817. The next prime is 198556867. The reversal of 198556844 is 448655891.

It is a junction number, because it is equal to n+sod(n) for n = 198556792 and 198556801.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 24819602 + ... + 24819609.

It is an arithmetic number, because the mean of its divisors is an integer number (57912414).

Almost surely, 2^198556844 is an apocalyptic number.

It is an amenable number.

198556844 is a deficient number, since it is larger than the sum of its proper divisors (148917640).

198556844 is a wasteful number, since it uses less digits than its factorization.

198556844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49639215 (or 49639213 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 50.

The square root of 198556844 is about 14091.0199772763. The cubic root of 198556844 is about 583.3935461836.

The spelling of 198556844 in words is "one hundred ninety-eight million, five hundred fifty-six thousand, eight hundred forty-four".