198379018 has 8 divisors (see below), whose sum is σ = 315072612. Its totient is φ = 93354816.

The previous prime is 198378997. The next prime is 198379037. The reversal of 198379018 is 810973891.

It can be written as a sum of positive squares in 2 ways, for example, as 196644529 + 1734489 = 14023^2 + 1317^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2917305 + ... + 2917372.

Almost surely, 2^198379018 is an apocalyptic number.

198379018 is a deficient number, since it is larger than the sum of its proper divisors (116693594).

198379018 is a wasteful number, since it uses less digits than its factorization.

198379018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5834696.

The product of its (nonzero) digits is 108864, while the sum is 46.

The square root of 198379018 is about 14084.7086586837. The cubic root of 198379018 is about 583.2193332237.

The spelling of 198379018 in words is "one hundred ninety-eight million, three hundred seventy-nine thousand, eighteen".