198513566748 has 48 divisors (see below), whose sum is σ = 588188348160. Its totient is φ = 56718161712.

The previous prime is 198513566737. The next prime is 198513566767. The reversal of 198513566748 is 847665315891.

198513566748 is a `hidden beast` number, since 1 + 9 + 8 + 513 + 56 + 67 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131291286 + ... + 131292797.

It is an arithmetic number, because the mean of its divisors is an integer number (12253923920).

Almost surely, 2^198513566748 is an apocalyptic number.

198513566748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

198513566748 is an abundant number, since it is smaller than the sum of its proper divisors (389674781412).

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

198513566748 is a wasteful number, since it uses less digits than its factorization.

198513566748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262584103 (or 262584095 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 198513566748 in words is "one hundred ninety-eight billion, five hundred thirteen million, five hundred sixty-six thousand, seven hundred forty-eight".