19589542943 has 2 divisors, whose sum is σ = 19589542944. Its totient is φ = 19589542942.

The previous prime is 19589542913. The next prime is 19589542961. The reversal of 19589542943 is 34924598591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19589542943 - 2¹⁴ = 19589526559 is a prime.

It is a super-2 number, since 2×19589542943² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19589542913) 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 as a sum of consecutive naturals, namely, 9794771471 + 9794771472.

It is an arithmetic number, because the mean of its divisors is an integer number (9794771472).

Almost surely, 2^19589542943 is an apocalyptic number.

19589542943 is a deficient number, since it is larger than the sum of its proper divisors (1).

19589542943 is an equidigital number, since it uses as much as digits as its factorization.

19589542943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13996800, while the sum is 59.

The spelling of 19589542943 in words is "nineteen billion, five hundred eighty-nine million, five hundred forty-two thousand, nine hundred forty-three".