198553816 has 16 divisors (see below), whose sum is σ = 381369240. Its totient is φ = 96855360.

The previous prime is 198553813. The next prime is 198553837. The reversal of 198553816 is 618355891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198553813) 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, 302346 + ... + 303001.

Almost surely, 2^198553816 is an apocalyptic number.

It is an amenable number.

198553816 is a deficient number, since it is larger than the sum of its proper divisors (182815424).

198553816 is a wasteful number, since it uses less digits than its factorization.

198553816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605394 (or 605390 counting only the distinct ones).

The product of its digits is 259200, while the sum is 46.

The square root of 198553816 is about 14090.9125325509. The cubic root of 198553816 is about 583.3905805767.

The spelling of 198553816 in words is "one hundred ninety-eight million, five hundred fifty-three thousand, eight hundred sixteen".