19821482543 has 8 divisors (see below), whose sum is σ = 20047579200. Its totient is φ = 19595461248.

The previous prime is 19821482539. The next prime is 19821482563. The reversal of 19821482543 is 34528412891.

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

It is a cyclic number.

It is not a de Polignac number, because 19821482543 - 2² = 19821482539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19821482533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640730 + ... + 670952.

It is an arithmetic number, because the mean of its divisors is an integer number (2505947400).

Almost surely, 2^19821482543 is an apocalyptic number.

19821482543 is a deficient number, since it is larger than the sum of its proper divisors (226096657).

19821482543 is an equidigital number, since it uses as much as digits as its factorization.

19821482543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37681.

The product of its digits is 552960, while the sum is 47.

The spelling of 19821482543 in words is "nineteen billion, eight hundred twenty-one million, four hundred eighty-two thousand, five hundred forty-three".