1931649819648 has 176 divisors, whose sum is σ = 5227106795136. Its totient is φ = 634080133120.

The previous prime is 1931649819559. The next prime is 1931649819653. The reversal of 1931649819648 is 8469189461391.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207856090 + ... + 207865382.

Almost surely, 2^{1931649819648} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1931649819648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2613553397568).

1931649819648 is an abundant number, since it is smaller than the sum of its proper divisors (3295456975488).

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

1931649819648 is an equidigital number, since it uses as much as digits as its factorization.

1931649819648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10340 (or 10322 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 69.

The spelling of 1931649819648 in words is "one trillion, nine hundred thirty-one billion, six hundred forty-nine million, eight hundred nineteen thousand, six hundred forty-eight".