198541856052 has 48 divisors (see below), whose sum is σ = 515351894400. Its totient is φ = 66101708160.

The previous prime is 198541856047. The next prime is 198541856059. The reversal of 198541856052 is 250658145891.

198541856052 is a `hidden beast` number, since 1 + 98 + 541 + 8 + 5 + 6 + 0 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 198541856052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198541856059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1004949 + ... + 1186172.

It is an arithmetic number, because the mean of its divisors is an integer number (10736497800).

Almost surely, 2^198541856052 is an apocalyptic number.

198541856052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198541856052 is an abundant number, since it is smaller than the sum of its proper divisors (316810038348).

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

198541856052 is a wasteful number, since it uses less digits than its factorization.

198541856052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191973 (or 2191965 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 54.

The spelling of 198541856052 in words is "one hundred ninety-eight billion, five hundred forty-one million, eight hundred fifty-six thousand, fifty-two".