19597223798 has 16 divisors (see below), whose sum is σ = 29484324000. Its totient is φ = 9769156992.

The previous prime is 19597223797. The next prime is 19597223801. The reversal of 19597223798 is 89732279591.

It is a self number, because there is not a number n which added to its sum of digits gives 19597223798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19597223791) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1017623 + ... + 1036701.

It is an arithmetic number, because the mean of its divisors is an integer number (1842770250).

Almost surely, 2^19597223798 is an apocalyptic number.

19597223798 is a deficient number, since it is larger than the sum of its proper divisors (9887100202).

19597223798 is a wasteful number, since it uses less digits than its factorization.

19597223798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20599.

The product of its digits is 17146080, while the sum is 62.

The spelling of 19597223798 in words is "nineteen billion, five hundred ninety-seven million, two hundred twenty-three thousand, seven hundred ninety-eight".