1791921784348 has 24 divisors (see below), whose sum is σ = 3238778898432. Its totient is φ = 866945848944.

The previous prime is 1791921784339. The next prime is 1791921784351. The reversal of 1791921784348 is 8434871291971.

It is a self number, because there is not a number n which added to its sum of digits gives 1791921784348.

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 7 ways as a sum of consecutive naturals, for example, 48664540 + ... + 48701347.

It is an arithmetic number, because the mean of its divisors is an integer number (134949120768).

Almost surely, 2^{1791921784348} is an apocalyptic number.

It is an amenable number.

1791921784348 is a deficient number, since it is larger than the sum of its proper divisors (1446857114084).

1791921784348 is a wasteful number, since it uses less digits than its factorization.

1791921784348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97366041 (or 97366039 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 64.

The spelling of 1791921784348 in words is "one trillion, seven hundred ninety-one billion, nine hundred twenty-one million, seven hundred eighty-four thousand, three hundred forty-eight".