198230437528 has 8 divisors (see below), whose sum is σ = 371682070380. Its totient is φ = 99115218760.

The previous prime is 198230437511. The next prime is 198230437577. The reversal of 198230437528 is 825734032891.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12389402338 + ... + 12389402353.

Almost surely, 2^198230437528 is an apocalyptic number.

It is an amenable number.

198230437528 is a deficient number, since it is larger than the sum of its proper divisors (173451632852).

198230437528 is a wasteful number, since it uses less digits than its factorization.

198230437528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24778804697 (or 24778804693 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 198230437528 in words is "one hundred ninety-eight billion, two hundred thirty million, four hundred thirty-seven thousand, five hundred twenty-eight".