19306559953 has 2 divisors, whose sum is σ = 19306559954. Its totient is φ = 19306559952.

The previous prime is 19306559947. The next prime is 19306560023. The reversal of 19306559953 is 35995560391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13619590209 + 5686969744 = 116703^2 + 75412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19306559953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19306559894 and 19306559903.

It is not a weakly prime, because it can be changed into another prime (19306559903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9653279976 + 9653279977.

It is an arithmetic number, because the mean of its divisors is an integer number (9653279977).

Almost surely, 2^19306559953 is an apocalyptic number.

It is an amenable number.

19306559953 is a deficient number, since it is larger than the sum of its proper divisors (1).

19306559953 is an equidigital number, since it uses as much as digits as its factorization.

19306559953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4920750, while the sum is 55.

The spelling of 19306559953 in words is "nineteen billion, three hundred six million, five hundred fifty-nine thousand, nine hundred fifty-three".