19803930829 has 4 divisors (see below), whose sum is σ = 19807041760. Its totient is φ = 19800819900.

The previous prime is 19803930803. The next prime is 19803930847. The reversal of 19803930829 is 92803930891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19803930829 - 2²¹ = 19801833677 is a prime.

It is a super-3 number, since 3×19803930829³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19803930329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1545897 + ... + 1558654.

It is an arithmetic number, because the mean of its divisors is an integer number (4951760440).

Almost surely, 2^19803930829 is an apocalyptic number.

It is an amenable number.

19803930829 is a deficient number, since it is larger than the sum of its proper divisors (3110931).

19803930829 is an equidigital number, since it uses as much as digits as its factorization.

19803930829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110930.

The product of its (nonzero) digits is 839808, while the sum is 52.

The spelling of 19803930829 in words is "nineteen billion, eight hundred three million, nine hundred thirty thousand, eight hundred twenty-nine".