198505738 has 8 divisors (see below), whose sum is σ = 297824832. Its totient is φ = 99230796.

The previous prime is 198505729. The next prime is 198505757. The reversal of 198505738 is 837505891.

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, 4681 + ... + 20467.

It is an arithmetic number, because the mean of its divisors is an integer number (37228104).

Almost surely, 2^198505738 is an apocalyptic number.

198505738 is a deficient number, since it is larger than the sum of its proper divisors (99319094).

198505738 is a wasteful number, since it uses less digits than its factorization.

198505738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22076.

The product of its (nonzero) digits is 302400, while the sum is 46.

The square root of 198505738 is about 14089.2064361340. The cubic root of 198505738 is about 583.3434892019.

The spelling of 198505738 in words is "one hundred ninety-eight million, five hundred five thousand, seven hundred thirty-eight".