19199064481 has 2 divisors, whose sum is σ = 19199064482. Its totient is φ = 19199064480.

The previous prime is 19199064457. The next prime is 19199064487. The reversal of 19199064481 is 18446099191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11452424256 + 7746640225 = 107016^2 + 88015^2 .

It is a cyclic number.

It is not a de Polignac number, because 19199064481 - 2²⁹ = 18662193569 is a prime.

It is a super-2 number, since 2×19199064481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19199064487) 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, 9599532240 + 9599532241.

It is an arithmetic number, because the mean of its divisors is an integer number (9599532241).

Almost surely, 2^19199064481 is an apocalyptic number.

It is an amenable number.

19199064481 is a deficient number, since it is larger than the sum of its proper divisors (1).

19199064481 is an equidigital number, since it uses as much as digits as its factorization.

19199064481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 52.

The spelling of 19199064481 in words is "nineteen billion, one hundred ninety-nine million, sixty-four thousand, four hundred eighty-one".