198803749 has 8 divisors (see below), whose sum is σ = 207757440. Its totient is φ = 190046976.

The previous prime is 198803741. The next prime is 198803771. The reversal of 198803749 is 947308891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198803749 - 2³ = 198803741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198803741) 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, 47164 + ... + 51205.

It is an arithmetic number, because the mean of its divisors is an integer number (25969680).

Almost surely, 2^198803749 is an apocalyptic number.

It is an amenable number.

198803749 is a deficient number, since it is larger than the sum of its proper divisors (8953691).

198803749 is an equidigital number, since it uses as much as digits as its factorization.

198803749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98459.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 198803749 is about 14099.7783315909. The cubic root of 198803749 is about 583.6352622185.

The spelling of 198803749 in words is "one hundred ninety-eight million, eight hundred three thousand, seven hundred forty-nine".