198499258 has 8 divisors (see below), whose sum is σ = 308016180. Its totient is φ = 95827200.

The previous prime is 198499253. The next prime is 198499277. The reversal of 198499258 is 852994891.

It can be written as a sum of positive squares in 2 ways, for example, as 172213129 + 26286129 = 13123^2 + 5127^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 198499199 and 198499208.

It is not an unprimeable number, because it can be changed into a prime (198499253) 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, 1711143 + ... + 1711258.

Almost surely, 2^198499258 is an apocalyptic number.

198499258 is a deficient number, since it is larger than the sum of its proper divisors (109516922).

198499258 is a wasteful number, since it uses less digits than its factorization.

198499258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422432.

The product of its digits is 1866240, while the sum is 55.

The square root of 198499258 is about 14088.9764709861. The cubic root of 198499258 is about 583.3371415987.

The spelling of 198499258 in words is "one hundred ninety-eight million, four hundred ninety-nine thousand, two hundred fifty-eight".