198422965 has 8 divisors (see below), whose sum is σ = 256423608. Its totient is φ = 146527680.

The previous prime is 198422951. The next prime is 198422969. The reversal of 198422965 is 569224891.

It can be written as a sum of positive squares in 4 ways, for example, as 30228004 + 168194961 = 5498^2 + 12969^2 .

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

It is not a de Polignac number, because 198422965 - 2¹³ = 198414773 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 (198422969) 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, 1526266 + ... + 1526395.

It is an arithmetic number, because the mean of its divisors is an integer number (32052951).

Almost surely, 2^198422965 is an apocalyptic number.

It is an amenable number.

198422965 is a deficient number, since it is larger than the sum of its proper divisors (58000643).

198422965 is a wasteful number, since it uses less digits than its factorization.

198422965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052679.

The product of its digits is 311040, while the sum is 46.

The square root of 198422965 is about 14086.2686684587. The cubic root of 198422965 is about 583.2623969977.

The spelling of 198422965 in words is "one hundred ninety-eight million, four hundred twenty-two thousand, nine hundred sixty-five".