19838283947 has 2 divisors, whose sum is σ = 19838283948. Its totient is φ = 19838283946.

The previous prime is 19838283929. The next prime is 19838283979. The reversal of 19838283947 is 74938283891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19838283947 - 2³² = 15543316651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19838283947.

It is not a weakly prime, because it can be changed into another prime (19838223947) 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, 9919141973 + 9919141974.

It is an arithmetic number, because the mean of its divisors is an integer number (9919141974).

Almost surely, 2^19838283947 is an apocalyptic number.

19838283947 is a deficient number, since it is larger than the sum of its proper divisors (1).

19838283947 is an equidigital number, since it uses as much as digits as its factorization.

19838283947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20901888, while the sum is 62.

The spelling of 19838283947 in words is "nineteen billion, eight hundred thirty-eight million, two hundred eighty-three thousand, nine hundred forty-seven".