198635141340 has 72 divisors (see below), whose sum is σ = 603503475120. Its totient is φ = 52883491584.

The previous prime is 198635141323. The next prime is 198635141351. The reversal of 198635141340 is 43141536891.

198635141340 is a `hidden beast` number, since 1 + 9 + 8 + 635 + 1 + 4 + 1 + 3 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 783210 + ... + 1005329.

It is an arithmetic number, because the mean of its divisors is an integer number (8381992710).

Almost surely, 2^198635141340 is an apocalyptic number.

198635141340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198635141340 is an abundant number, since it is smaller than the sum of its proper divisors (404868333780).

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

198635141340 is a wasteful number, since it uses less digits than its factorization.

198635141340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789171 (or 1789166 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 198635141340 in words is "one hundred ninety-eight billion, six hundred thirty-five million, one hundred forty-one thousand, three hundred forty".