19882794459 has 16 divisors (see below), whose sum is σ = 28982378880. Its totient is φ = 12024365760.

The previous prime is 19882794403. The next prime is 19882794479. The reversal of 19882794459 is 95449728891.

It is not a de Polignac number, because 19882794459 - 2⁹ = 19882793947 is a prime.

It is a super-2 number, since 2×19882794459² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19882794459.

It is not an unprimeable number, because it can be changed into a prime (19882794479) 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, 629674 + ... + 660495.

It is an arithmetic number, because the mean of its divisors is an integer number (1811398680).

Almost surely, 2^19882794459 is an apocalyptic number.

19882794459 is a deficient number, since it is larger than the sum of its proper divisors (9099584421).

19882794459 is a wasteful number, since it uses less digits than its factorization.

19882794459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290650.

The product of its digits is 52254720, while the sum is 66.

The spelling of 19882794459 in words is "nineteen billion, eight hundred eighty-two million, seven hundred ninety-four thousand, four hundred fifty-nine".