19676398943 has 2 divisors, whose sum is σ = 19676398944. Its totient is φ = 19676398942.

The previous prime is 19676398871. The next prime is 19676398967. The reversal of 19676398943 is 34989367691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19676398943 - 2¹⁴ = 19676382559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19676398943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19676308943) 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, 9838199471 + 9838199472.

It is an arithmetic number, because the mean of its divisors is an integer number (9838199472).

Almost surely, 2^19676398943 is an apocalyptic number.

19676398943 is a deficient number, since it is larger than the sum of its proper divisors (1).

19676398943 is an equidigital number, since it uses as much as digits as its factorization.

19676398943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52907904, while the sum is 65.

The spelling of 19676398943 in words is "nineteen billion, six hundred seventy-six million, three hundred ninety-eight thousand, nine hundred forty-three".