19838854927 has 2 divisors, whose sum is σ = 19838854928. Its totient is φ = 19838854926.

The previous prime is 19838854909. The next prime is 19838854943. The reversal of 19838854927 is 72945883891.

It is a strong prime.

It is an emirp because it is prime and its reverse (72945883891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19838854927 - 2¹¹ = 19838852879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19838854127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9919427463 + 9919427464.

It is an arithmetic number, because the mean of its divisors is an integer number (9919427464).

Almost surely, 2^19838854927 is an apocalyptic number.

19838854927 is a deficient number, since it is larger than the sum of its proper divisors (1).

19838854927 is an equidigital number, since it uses as much as digits as its factorization.

19838854927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34836480, while the sum is 64.

The spelling of 19838854927 in words is "nineteen billion, eight hundred thirty-eight million, eight hundred fifty-four thousand, nine hundred twenty-seven".