198422650 has 12 divisors (see below), whose sum is σ = 369066222. Its totient is φ = 79369040.

The previous prime is 198422629. The next prime is 198422659. The reversal of 198422650 is 56224891.

It can be written as a sum of positive squares in 3 ways, for example, as 177928921 + 20493729 = 13339^2 + 4527^2 .

It is not an unprimeable number, because it can be changed into a prime (198422659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1984177 + ... + 1984276.

Almost surely, 2^198422650 is an apocalyptic number.

198422650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198422650 is a deficient number, since it is larger than the sum of its proper divisors (170643572).

198422650 is a wasteful number, since it uses less digits than its factorization.

198422650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968465 (or 3968460 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 198422650 is about 14086.2574873527. The cubic root of 198422650 is about 583.2620883511.

The spelling of 198422650 in words is "one hundred ninety-eight million, four hundred twenty-two thousand, six hundred fifty".