19084593481 has 2 divisors, whose sum is σ = 19084593482. Its totient is φ = 19084593480.

The previous prime is 19084593427. The next prime is 19084593497. The reversal of 19084593481 is 18439548091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19074095881 + 10497600 = 138109^2 + 3240^2 .

It is an emirp because it is prime and its reverse (18439548091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19084593481 - 2¹⁵ = 19084560713 is a prime.

It is a super-2 number, since 2×19084593481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19084593401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9542296740 + 9542296741.

It is an arithmetic number, because the mean of its divisors is an integer number (9542296741).

Almost surely, 2^19084593481 is an apocalyptic number.

It is an amenable number.

19084593481 is a deficient number, since it is larger than the sum of its proper divisors (1).

19084593481 is an equidigital number, since it uses as much as digits as its factorization.

19084593481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 19084593481 in words is "nineteen billion, eighty-four million, five hundred ninety-three thousand, four hundred eighty-one".