198984771270 has 96 divisors (see below), whose sum is σ = 521058938400. Its totient is φ = 52684111872.

The previous prime is 198984771241. The next prime is 198984771317. The reversal of 198984771270 is 72177489891.

198984771270 is a `hidden beast` number, since 1 + 9 + 8 + 98 + 477 + 1 + 2 + 70 = 666.

198984771270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 198984771198 and 198984771207.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 11965021 + ... + 11981639.

It is an arithmetic number, because the mean of its divisors is an integer number (5427697275).

Almost surely, 2^198984771270 is an apocalyptic number.

198984771270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 198984771270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260529469200).

198984771270 is an abundant number, since it is smaller than the sum of its proper divisors (322074167130).

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

198984771270 is a wasteful number, since it uses less digits than its factorization.

198984771270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17574 (or 17571 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 63.

The spelling of 198984771270 in words is "one hundred ninety-eight billion, nine hundred eighty-four million, seven hundred seventy-one thousand, two hundred seventy".