198498658 has 16 divisors (see below), whose sum is σ = 301722840. Its totient is φ = 97929216.

The previous prime is 198498631. The next prime is 198498659. The reversal of 198498658 is 856894891.

It can be written as a sum of positive squares in 4 ways, for example, as 108305649 + 90193009 = 10407^2 + 9497^2 .

It is not an unprimeable number, because it can be changed into a prime (198498659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118966 + ... + 120622.

Almost surely, 2^198498658 is an apocalyptic number.

198498658 is a deficient number, since it is larger than the sum of its proper divisors (103224182).

198498658 is a wasteful number, since it uses less digits than its factorization.

198498658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421.

The product of its digits is 4976640, while the sum is 58.

The square root of 198498658 is about 14088.9551777270. The cubic root of 198498658 is about 583.3365538507.

The spelling of 198498658 in words is "one hundred ninety-eight million, four hundred ninety-eight thousand, six hundred fifty-eight".