198945844 has 6 divisors (see below), whose sum is σ = 348155234. Its totient is φ = 99472920.

The previous prime is 198945823. The next prime is 198945853. The reversal of 198945844 is 448549891.

It can be written as a sum of positive squares in only one way, i.e., 131377444 + 67568400 = 11462^2 + 8220^2 .

It is a junction number, because it is equal to n+sod(n) for n = 198945791 and 198945800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24868227 + ... + 24868234.

Almost surely, 2^198945844 is an apocalyptic number.

It is an amenable number.

198945844 is a deficient number, since it is larger than the sum of its proper divisors (149209390).

198945844 is a wasteful number, since it uses less digits than its factorization.

198945844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49736465 (or 49736463 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 52.

The square root of 198945844 is about 14104.8163405271. The cubic root of 198945844 is about 583.7742802239.

The spelling of 198945844 in words is "one hundred ninety-eight million, nine hundred forty-five thousand, eight hundred forty-four".