198180044 has 6 divisors (see below), whose sum is σ = 346815084. Its totient is φ = 99090020.

The previous prime is 198180041. The next prime is 198180097. The reversal of 198180044 is 440081891.

It is a junction number, because it is equal to n+sod(n) for n = 198179986 and 198180013.

It is not an unprimeable number, because it can be changed into a prime (198180041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24772502 + ... + 24772509.

It is an arithmetic number, because the mean of its divisors is an integer number (57802514).

Almost surely, 2^198180044 is an apocalyptic number.

It is an amenable number.

198180044 is a deficient number, since it is larger than the sum of its proper divisors (148635040).

198180044 is a wasteful number, since it uses less digits than its factorization.

198180044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49545015 (or 49545013 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 198180044 is about 14077.6434107417. The cubic root of 198180044 is about 583.0242784841.

The spelling of 198180044 in words is "one hundred ninety-eight million, one hundred eighty thousand, forty-four".