198648594 has 12 divisors (see below), whose sum is σ = 430405326. Its totient is φ = 66216192.

The previous prime is 198648559. The next prime is 198648601. The reversal of 198648594 is 495846891.

198648594 is a `hidden beast` number, since 1 + 9 + 8 + 6 + 48 + 594 = 666.

198648594 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 149157369 + 49491225 = 12213^2 + 7035^2 .

It is a super-2 number, since 2×198648594² = 78922527796353672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198648594.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5517999 + ... + 5518034.

Almost surely, 2^198648594 is an apocalyptic number.

198648594 is an abundant number, since it is smaller than the sum of its proper divisors (231756732).

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

198648594 is a wasteful number, since it uses less digits than its factorization.

198648594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036041 (or 11036038 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 198648594 is about 14094.2752208122. The cubic root of 198648594 is about 583.4833913455.

The spelling of 198648594 in words is "one hundred ninety-eight million, six hundred forty-eight thousand, five hundred ninety-four".