198900749548 has 12 divisors (see below), whose sum is σ = 363210064560. Its totient is φ = 95126445392.

The previous prime is 198900749539. The next prime is 198900749599. The reversal of 198900749548 is 845947009891.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 198900749548.

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, 1080982243 + ... + 1080982426.

It is an arithmetic number, because the mean of its divisors is an integer number (30267505380).

Almost surely, 2^198900749548 is an apocalyptic number.

It is an amenable number.

198900749548 is a deficient number, since it is larger than the sum of its proper divisors (164309315012).

198900749548 is a wasteful number, since it uses less digits than its factorization.

198900749548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161964696 (or 2161964694 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 64.

The spelling of 198900749548 in words is "one hundred ninety-eight billion, nine hundred million, seven hundred forty-nine thousand, five hundred forty-eight".