198424645 has 8 divisors (see below), whose sum is σ = 245790720. Its totient is φ = 153618960.

The previous prime is 198424637. The next prime is 198424687. The reversal of 198424645 is 546424891.

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

It is not a de Polignac number, because 198424645 - 2³ = 198424637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639925 + ... + 640234.

It is an arithmetic number, because the mean of its divisors is an integer number (30723840).

Almost surely, 2^198424645 is an apocalyptic number.

It is an amenable number.

198424645 is a deficient number, since it is larger than the sum of its proper divisors (47366075).

198424645 is a wasteful number, since it uses less digits than its factorization.

198424645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280195.

The product of its digits is 276480, while the sum is 43.

The square root of 198424645 is about 14086.3283008739. The cubic root of 198424645 is about 583.2640431077.

The spelling of 198424645 in words is "one hundred ninety-eight million, four hundred twenty-four thousand, six hundred forty-five".