19798489463 has 2 divisors, whose sum is σ = 19798489464. Its totient is φ = 19798489462.

The previous prime is 19798489429. The next prime is 19798489517. The reversal of 19798489463 is 36498489791.

It is a weak prime.

It is an emirp because it is prime and its reverse (36498489791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19798489463 - 2²⁸ = 19530054007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19798489393 and 19798489402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19791489463) 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, 9899244731 + 9899244732.

It is an arithmetic number, because the mean of its divisors is an integer number (9899244732).

Almost surely, 2^19798489463 is an apocalyptic number.

19798489463 is a deficient number, since it is larger than the sum of its proper divisors (1).

19798489463 is an equidigital number, since it uses as much as digits as its factorization.

19798489463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94058496, while the sum is 68.

The spelling of 19798489463 in words is "nineteen billion, seven hundred ninety-eight million, four hundred eighty-nine thousand, four hundred sixty-three".