198328734630 has 128 divisors (see below), whose sum is σ = 569719180800. Its totient is φ = 48805690752.

The previous prime is 198328734623. The next prime is 198328734671. The reversal of 198328734630 is 36437823891.

198328734630 is a `hidden beast` number, since 1 + 98 + 3 + 28 + 73 + 463 + 0 = 666.

It is a super-2 number, since 2×198328734630² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19015477 + ... + 19025903.

It is an arithmetic number, because the mean of its divisors is an integer number (4450931100).

Almost surely, 2^198328734630 is an apocalyptic number.

198328734630 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 198328734630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284859590400).

198328734630 is an abundant number, since it is smaller than the sum of its proper divisors (371390446170).

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

198328734630 is a wasteful number, since it uses less digits than its factorization.

198328734630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15875 (or 15869 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 198328734630 in words is "one hundred ninety-eight billion, three hundred twenty-eight million, seven hundred thirty-four thousand, six hundred thirty".