19928546347 has 2 divisors, whose sum is σ = 19928546348. Its totient is φ = 19928546346.

The previous prime is 19928546311. The next prime is 19928546353. The reversal of 19928546347 is 74364582991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19928546347 - 2³¹ = 17781062699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19928546291 and 19928546300.

It is not a weakly prime, because it can be changed into another prime (19928546147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9964273173 + 9964273174.

It is an arithmetic number, because the mean of its divisors is an integer number (9964273174).

Almost surely, 2^19928546347 is an apocalyptic number.

19928546347 is a deficient number, since it is larger than the sum of its proper divisors (1).

19928546347 is an equidigital number, since it uses as much as digits as its factorization.

19928546347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 58.

The spelling of 19928546347 in words is "nineteen billion, nine hundred twenty-eight million, five hundred forty-six thousand, three hundred forty-seven".