1791440549493 has 16 divisors (see below), whose sum is σ = 2729833666560. Its totient is φ = 1023673003056.

The previous prime is 1791440549453. The next prime is 1791440549519. The reversal of 1791440549493 is 3949450441971.

It is a happy number.

It is not a de Polignac number, because 1791440549493 - 2⁹ = 1791440548981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1791440549413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4384248 + ... + 4775406.

It is an arithmetic number, because the mean of its divisors is an integer number (170614604160).

Almost surely, 2^{1791440549493} is an apocalyptic number.

It is an amenable number.

1791440549493 is a deficient number, since it is larger than the sum of its proper divisors (938393117067).

1791440549493 is a wasteful number, since it uses less digits than its factorization.

1791440549493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609256.

The product of its (nonzero) digits is 19595520, while the sum is 60.

The spelling of 1791440549493 in words is "one trillion, seven hundred ninety-one billion, four hundred forty million, five hundred forty-nine thousand, four hundred ninety-three".