19729230213 has 32 divisors (see below), whose sum is σ = 33121400832. Its totient is φ = 10147464000.

The previous prime is 19729230181. The next prime is 19729230223. The reversal of 19729230213 is 31203292791.

It is not a de Polignac number, because 19729230213 - 2⁵ = 19729230181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19729230223) 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 31 ways as a sum of consecutive naturals, for example, 399481 + ... + 446142.

It is an arithmetic number, because the mean of its divisors is an integer number (1035043776).

Almost surely, 2^19729230213 is an apocalyptic number.

It is an amenable number.

19729230213 is a deficient number, since it is larger than the sum of its proper divisors (13392170619).

19729230213 is a wasteful number, since it uses less digits than its factorization.

19729230213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845745.

The product of its (nonzero) digits is 40824, while the sum is 39.

It can be divided in two parts, 19729 and 230213, that added together give a palindrome (249942).

The spelling of 19729230213 in words is "nineteen billion, seven hundred twenty-nine million, two hundred thirty thousand, two hundred thirteen".