198203144 has 16 divisors (see below), whose sum is σ = 387789120. Its totient is φ = 94792720.

The previous prime is 198203141. The next prime is 198203147. The reversal of 198203144 is 441302891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (198203141) and next prime (198203147).

It is a self number, because there is not a number n which added to its sum of digits gives 198203144.

It is not an unprimeable number, because it can be changed into a prime (198203141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538412 + ... + 538779.

It is an arithmetic number, because the mean of its divisors is an integer number (24236820).

Almost surely, 2^198203144 is an apocalyptic number.

It is an amenable number.

198203144 is a deficient number, since it is larger than the sum of its proper divisors (189585976).

198203144 is a wasteful number, since it uses less digits than its factorization.

198203144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077220 (or 1077216 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 198203144 is about 14078.4638366549. The cubic root of 198203144 is about 583.0469301721.

The spelling of 198203144 in words is "one hundred ninety-eight million, two hundred three thousand, one hundred forty-four".