8919819878383 has 2 divisors, whose sum is σ = 8919819878384. Its totient is φ = 8919819878382.

The previous prime is 8919819878381. The next prime is 8919819878393. The reversal of 8919819878383 is 3838789189198.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8919819878383 - 2¹ = 8919819878381 is a prime.

Together with 8919819878381, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 8919819878297 and 8919819878306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8919819878381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4459909939191 + 4459909939192.

It is an arithmetic number, because the mean of its divisors is an integer number (4459909939192).

Almost surely, 2^{8919819878383} is an apocalyptic number.

8919819878383 is a deficient number, since it is larger than the sum of its proper divisors (1).

8919819878383 is an equidigital number, since it uses as much as digits as its factorization.

8919819878383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1504935936, while the sum is 82.

The spelling of 8919819878383 in words is "eight trillion, nine hundred nineteen billion, eight hundred nineteen million, eight hundred seventy-eight thousand, three hundred eighty-three".