198912338 has 8 divisors (see below), whose sum is σ = 303259980. Its totient is φ = 97825680.

The previous prime is 198912331. The next prime is 198912341. The reversal of 198912338 is 833219891.

It can be written as a sum of positive squares in 2 ways, for example, as 162996289 + 35916049 = 12767^2 + 5993^2 .

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

It is a super-2 number, since 2×198912338² = 79132236417252488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198912331) 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, 815093 + ... + 815336.

Almost surely, 2^198912338 is an apocalyptic number.

198912338 is a deficient number, since it is larger than the sum of its proper divisors (104347642).

198912338 is a wasteful number, since it uses less digits than its factorization.

198912338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630492.

The product of its digits is 93312, while the sum is 44.

The square root of 198912338 is about 14103.6285402020. The cubic root of 198912338 is about 583.7415057448.

The spelling of 198912338 in words is "one hundred ninety-eight million, nine hundred twelve thousand, three hundred thirty-eight".