198404994952 has 32 divisors (see below), whose sum is σ = 393928087320. Its totient is φ = 93358566400.

The previous prime is 198404994941. The next prime is 198404994971. The reversal of 198404994952 is 259499404891.

It can be written as a sum of positive squares in 4 ways, for example, as 161223128676 + 37181866276 = 401526^2 + 192826^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1585458 + ... + 1706014.

Almost surely, 2^198404994952 is an apocalyptic number.

It is an amenable number.

198404994952 is a deficient number, since it is larger than the sum of its proper divisors (195523092368).

198404994952 is a wasteful number, since it uses less digits than its factorization.

198404994952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132681 (or 132677 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 64.

The spelling of 198404994952 in words is "one hundred ninety-eight billion, four hundred four million, nine hundred ninety-four thousand, nine hundred fifty-two".