198218822 has 8 divisors (see below), whose sum is σ = 297950400. Its totient is φ = 98902024.

The previous prime is 198218771. The next prime is 198218843. The reversal of 198218822 is 228812891.

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

It is a self number, because there is not a number n which added to its sum of digits gives 198218822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102497 + ... + 104412.

It is an arithmetic number, because the mean of its divisors is an integer number (37243800).

Almost surely, 2^198218822 is an apocalyptic number.

198218822 is a deficient number, since it is larger than the sum of its proper divisors (99731578).

198218822 is a wasteful number, since it uses less digits than its factorization.

198218822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207390.

The product of its digits is 36864, while the sum is 41.

The square root of 198218822 is about 14079.0206335526. The cubic root of 198218822 is about 583.0623028996.

The spelling of 198218822 in words is "one hundred ninety-eight million, two hundred eighteen thousand, eight hundred twenty-two".