198578316 has 12 divisors (see below), whose sum is σ = 463349432. Its totient is φ = 66192768.

The previous prime is 198578311. The next prime is 198578339. The reversal of 198578316 is 613875891.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (198578311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8274085 + ... + 8274108.

Almost surely, 2^198578316 is an apocalyptic number.

It is an amenable number.

198578316 is an abundant number, since it is smaller than the sum of its proper divisors (264771116).

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

198578316 is a wasteful number, since it uses less digits than its factorization.

198578316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16548200 (or 16548198 counting only the distinct ones).

The product of its digits is 362880, while the sum is 48.

The square root of 198578316 is about 14091.7818603610. The cubic root of 198578316 is about 583.4145748799.

The spelling of 198578316 in words is "one hundred ninety-eight million, five hundred seventy-eight thousand, three hundred sixteen".