198537253704 has 24 divisors (see below), whose sum is σ = 537705062310. Its totient is φ = 66179084544.

The previous prime is 198537253639. The next prime is 198537253723. The reversal of 198537253704 is 407352735891.

198537253704 is a `hidden beast` number, since 19 + 8 + 537 + 25 + 3 + 70 + 4 = 666.

198537253704 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 190181465604 + 8355788100 = 436098^2 + 91410^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×198537253704² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1378730857 + ... + 1378731000.

Almost surely, 2^198537253704 is an apocalyptic number.

It is an amenable number.

198537253704 is an abundant number, since it is smaller than the sum of its proper divisors (339167808606).

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

198537253704 is a wasteful number, since it uses less digits than its factorization.

198537253704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757461869 (or 2757461862 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 198537253704 in words is "one hundred ninety-eight billion, five hundred thirty-seven million, two hundred fifty-three thousand, seven hundred four".