19228959439 has 2 divisors, whose sum is σ = 19228959440. Its totient is φ = 19228959438.

The previous prime is 19228959413. The next prime is 19228959457. The reversal of 19228959439 is 93495982291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19228959439 - 2¹⁹ = 19228435151 is a prime.

It is a super-2 number, since 2×19228959439² (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 (19228909439) 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, 9614479719 + 9614479720.

It is an arithmetic number, because the mean of its divisors is an integer number (9614479720).

Almost surely, 2^19228959439 is an apocalyptic number.

19228959439 is a deficient number, since it is larger than the sum of its proper divisors (1).

19228959439 is an equidigital number, since it uses as much as digits as its factorization.

19228959439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12597120, while the sum is 61.

The spelling of 19228959439 in words is "nineteen billion, two hundred twenty-eight million, nine hundred fifty-nine thousand, four hundred thirty-nine".