18833873675549 has 2 divisors, whose sum is σ = 18833873675550. Its totient is φ = 18833873675548.

The previous prime is 18833873675537. The next prime is 18833873675587. The reversal of 18833873675549 is 94557637833881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10972775500324 + 7861098175225 = 3312518^2 + 2803765^2 .

It is an emirp because it is prime and its reverse (94557637833881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18833873675549 - 2¹² = 18833873671453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18833873675549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18833873675249) 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, 9416936837774 + 9416936837775.

It is an arithmetic number, because the mean of its divisors is an integer number (9416936837775).

Almost surely, 2^{18833873675549} is an apocalyptic number.

It is an amenable number.

18833873675549 is a deficient number, since it is larger than the sum of its proper divisors (1).

18833873675549 is an equidigital number, since it uses as much as digits as its factorization.

18833873675549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3657830400, while the sum is 77.

The spelling of 18833873675549 in words is "eighteen trillion, eight hundred thirty-three billion, eight hundred seventy-three million, six hundred seventy-five thousand, five hundred forty-nine".