19741688573 has 2 divisors, whose sum is σ = 19741688574. Its totient is φ = 19741688572.

The previous prime is 19741688543. The next prime is 19741688597. The reversal of 19741688573 is 37588614791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13427479129 + 6314209444 = 115877^2 + 79462^2 .

It is a cyclic number.

It is not a de Polignac number, because 19741688573 - 2¹² = 19741684477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19741688543) 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, 9870844286 + 9870844287.

It is an arithmetic number, because the mean of its divisors is an integer number (9870844287).

Almost surely, 2^19741688573 is an apocalyptic number.

It is an amenable number.

19741688573 is a deficient number, since it is larger than the sum of its proper divisors (1).

19741688573 is an equidigital number, since it uses as much as digits as its factorization.

19741688573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10160640, while the sum is 59.

The spelling of 19741688573 in words is "nineteen billion, seven hundred forty-one million, six hundred eighty-eight thousand, five hundred seventy-three".