198217916 has 24 divisors (see below), whose sum is σ = 373979760. Its totient is φ = 91383552.

The previous prime is 198217913. The next prime is 198217931. The reversal of 198217916 is 619712891.

It is a super-3 number, since 3×198217916³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198217913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65975 + ... + 68913.

It is an arithmetic number, because the mean of its divisors is an integer number (15582490).

Almost surely, 2^198217916 is an apocalyptic number.

It is an amenable number.

198217916 is a deficient number, since it is larger than the sum of its proper divisors (175761844).

198217916 is a wasteful number, since it uses less digits than its factorization.

198217916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4253 (or 4251 counting only the distinct ones).

The product of its digits is 54432, while the sum is 44.

The square root of 198217916 is about 14078.9884579823. The cubic root of 198217916 is about 583.0614145628.

The spelling of 198217916 in words is "one hundred ninety-eight million, two hundred seventeen thousand, nine hundred sixteen".