19983943529 has 8 divisors (see below), whose sum is σ = 22552413120. Its totient is φ = 17540765200.

The previous prime is 19983943493. The next prime is 19983943531. The reversal of 19983943529 is 92534938991.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19983943529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19983943229) 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, 31322477 + ... + 31323114.

It is an arithmetic number, because the mean of its divisors is an integer number (2819051640).

Almost surely, 2^19983943529 is an apocalyptic number.

It is an amenable number.

19983943529 is a deficient number, since it is larger than the sum of its proper divisors (2568469591).

19983943529 is a wasteful number, since it uses less digits than its factorization.

19983943529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62645631.

The product of its digits is 18895680, while the sum is 62.

The spelling of 19983943529 in words is "nineteen billion, nine hundred eighty-three million, nine hundred forty-three thousand, five hundred twenty-nine".