19009846481 has 2 divisors, whose sum is σ = 19009846482. Its totient is φ = 19009846480.

The previous prime is 19009846441. The next prime is 19009846483. The reversal of 19009846481 is 18464890091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18330722881 + 679123600 = 135391^2 + 26060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19009846481 is a prime.

It is a super-2 number, since 2×19009846481² (a number of 21 digits) contains 22 as substring.

Together with 19009846483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19009846483) 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, 9504923240 + 9504923241.

It is an arithmetic number, because the mean of its divisors is an integer number (9504923241).

Almost surely, 2^19009846481 is an apocalyptic number.

It is an amenable number.

19009846481 is a deficient number, since it is larger than the sum of its proper divisors (1).

19009846481 is an equidigital number, since it uses as much as digits as its factorization.

19009846481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 19009846481 in words is "nineteen billion, nine million, eight hundred forty-six thousand, four hundred eighty-one".