19502208013 has 2 divisors, whose sum is σ = 19502208014. Its totient is φ = 19502208012.

The previous prime is 19502208007. The next prime is 19502208029. The reversal of 19502208013 is 31080220591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12817183369 + 6685024644 = 113213^2 + 81762^2 .

It is a cyclic number.

It is not a de Polignac number, because 19502208013 - 2¹⁷ = 19502076941 is a prime.

It is a super-2 number, since 2×19502208013² (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 (19502208073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9751104006 + 9751104007.

It is an arithmetic number, because the mean of its divisors is an integer number (9751104007).

Almost surely, 2^19502208013 is an apocalyptic number.

It is an amenable number.

19502208013 is a deficient number, since it is larger than the sum of its proper divisors (1).

19502208013 is an equidigital number, since it uses as much as digits as its factorization.

19502208013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 19502208013 in words is "nineteen billion, five hundred two million, two hundred eight thousand, thirteen".