198908345 has 8 divisors (see below), whose sum is σ = 239129664. Its totient is φ = 158833584.

The previous prime is 198908341. The next prime is 198908351. The reversal of 198908345 is 543809891.

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 198908345 - 2² = 198908341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198908345.

It is not an unprimeable number, because it can be changed into a prime (198908341) 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, 33629 + ... + 39098.

It is an arithmetic number, because the mean of its divisors is an integer number (29891208).

Almost surely, 2^198908345 is an apocalyptic number.

It is an amenable number.

198908345 is a deficient number, since it is larger than the sum of its proper divisors (40221319).

198908345 is an equidigital number, since it uses as much as digits as its factorization.

198908345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73279.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 198908345 is about 14103.4869801762. The cubic root of 198908345 is about 583.7375996767.

The spelling of 198908345 in words is "one hundred ninety-eight million, nine hundred eight thousand, three hundred forty-five".