196258491648 has 144 divisors (see below), whose sum is σ = 581934485440. Its totient is φ = 65243252736.

The previous prime is 196258491641. The next prime is 196258491661. The reversal of 196258491648 is 846194852691.

196258491648 is a `hidden beast` number, since 1 + 9 + 6 + 2 + 584 + 9 + 1 + 6 + 48 = 666.

196258491648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196258491641) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2540115 + ... + 2616237.

Almost surely, 2^196258491648 is an apocalyptic number.

196258491648 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 196258491648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290967242720).

196258491648 is an abundant number, since it is smaller than the sum of its proper divisors (385675993792).

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

196258491648 is an equidigital number, since it uses as much as digits as its factorization.

196258491648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76521 (or 76501 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 63.

The spelling of 196258491648 in words is "one hundred ninety-six billion, two hundred fifty-eight million, four hundred ninety-one thousand, six hundred forty-eight".