198039238 has 16 divisors (see below), whose sum is σ = 300464640. Its totient is φ = 97888456.

The previous prime is 198039229. The next prime is 198039271. The reversal of 198039238 is 832930891.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 198039194 and 198039203.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 178995 + ... + 180097.

It is an arithmetic number, because the mean of its divisors is an integer number (18779040).

Almost surely, 2^198039238 is an apocalyptic number.

198039238 is a deficient number, since it is larger than the sum of its proper divisors (102425402).

198039238 is a wasteful number, since it uses less digits than its factorization.

198039238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 198039238 is about 14072.6414720194. The cubic root of 198039238 is about 582.8861670899.

The spelling of 198039238 in words is "one hundred ninety-eight million, thirty-nine thousand, two hundred thirty-eight".