198825906 has 8 divisors (see below), whose sum is σ = 397651824. Its totient is φ = 66275300.

The previous prime is 198825883. The next prime is 198825923. The reversal of 198825906 is 609528891.

It is a happy number.

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

198825906 is an admirable 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, 16568820 + ... + 16568831.

It is an arithmetic number, because the mean of its divisors is an integer number (49706478).

Almost surely, 2^198825906 is an apocalyptic number.

198825906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198825906 is a wasteful number, since it uses less digits than its factorization.

198825906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33137656.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 198825906 is about 14100.5640312719. The cubic root of 198825906 is about 583.6569437783.

The spelling of 198825906 in words is "one hundred ninety-eight million, eight hundred twenty-five thousand, nine hundred six".