198487898 has 8 divisors (see below), whose sum is σ = 340264992. Its totient is φ = 85066236.

The previous prime is 198487897. The next prime is 198487931. The reversal of 198487898 is 898784891.

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

It is a self number, because there is not a number n which added to its sum of digits gives 198487898.

It is not an unprimeable number, because it can be changed into a prime (198487897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7088840 + ... + 7088867.

It is an arithmetic number, because the mean of its divisors is an integer number (42533124).

Almost surely, 2^198487898 is an apocalyptic number.

198487898 is a deficient number, since it is larger than the sum of its proper divisors (141777094).

198487898 is a wasteful number, since it uses less digits than its factorization.

198487898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14177716.

The product of its digits is 9289728, while the sum is 62.

The square root of 198487898 is about 14088.5733131499. The cubic root of 198487898 is about 583.3260133685.

The spelling of 198487898 in words is "one hundred ninety-eight million, four hundred eighty-seven thousand, eight hundred ninety-eight".