198925397 has 8 divisors (see below), whose sum is σ = 219757440. Its totient is φ = 178551360.

The previous prime is 198925379. The next prime is 198925417. The reversal of 198925397 is 793529891.

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

It is a cyclic number.

It is not a de Polignac number, because 198925397 - 2⁸ = 198925141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198925897) by changing a digit.

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, 113588 + ... + 115325.

It is an arithmetic number, because the mean of its divisors is an integer number (27469680).

Almost surely, 2^198925397 is an apocalyptic number.

It is an amenable number.

198925397 is a deficient number, since it is larger than the sum of its proper divisors (20832043).

198925397 is a wasteful number, since it uses less digits than its factorization.

198925397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229003.

The product of its digits is 1224720, while the sum is 53.

The square root of 198925397 is about 14104.0914985688. The cubic root of 198925397 is about 583.7542800714.

The spelling of 198925397 in words is "one hundred ninety-eight million, nine hundred twenty-five thousand, three hundred ninety-seven".