191329630848 has 448 divisors, whose sum is σ = 592427685120. Its totient is φ = 61473945600.

The previous prime is 191329630787. The next prime is 191329630867. The reversal of 191329630848 is 848036923191.

191329630848 is a `hidden beast` number, since 1 + 9 + 1 + 3 + 296 + 308 + 48 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 191329630794 and 191329630803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 521333961 + ... + 521334327.

Almost surely, 2^191329630848 is an apocalyptic number.

191329630848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191329630848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296213842560).

191329630848 is an abundant number, since it is smaller than the sum of its proper divisors (401098054272).

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

191329630848 is an equidigital number, since it uses as much as digits as its factorization.

191329630848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 191329630848 in words is "one hundred ninety-one billion, three hundred twenty-nine million, six hundred thirty thousand, eight hundred forty-eight".