19678869983 has 2 divisors, whose sum is σ = 19678869984. Its totient is φ = 19678869982.

The previous prime is 19678869871. The next prime is 19678870007. The reversal of 19678869983 is 38996887691.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19678869983 - 2¹⁶ = 19678804447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19678869983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19678899983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9839434991 + 9839434992.

It is an arithmetic number, because the mean of its divisors is an integer number (9839434992).

Almost surely, 2^19678869983 is an apocalyptic number.

19678869983 is a deficient number, since it is larger than the sum of its proper divisors (1).

19678869983 is an equidigital number, since it uses as much as digits as its factorization.

19678869983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282175488, while the sum is 74.

The spelling of 19678869983 in words is "nineteen billion, six hundred seventy-eight million, eight hundred sixty-nine thousand, nine hundred eighty-three".