19795459791 has 8 divisors (see below), whose sum is σ = 26400157744. Its totient is φ = 13193867520.

The previous prime is 19795459781. The next prime is 19795459823.

It is a happy number.

19795459791 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19795459791 - 2⁹ = 19795459279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19795459781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 761506 + ... + 787071.

It is an arithmetic number, because the mean of its divisors is an integer number (3300019718).

Almost surely, 2^19795459791 is an apocalyptic number.

19795459791 is a deficient number, since it is larger than the sum of its proper divisors (6604697953).

19795459791 is a wasteful number, since it uses less digits than its factorization.

19795459791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552841.

The product of its digits is 32148900, while the sum is 66.

The spelling of 19795459791 in words is "nineteen billion, seven hundred ninety-five million, four hundred fifty-nine thousand, seven hundred ninety-one".