18793835590889 has 2 divisors, whose sum is σ = 18793835590890. Its totient is φ = 18793835590888.

The previous prime is 18793835590847. The next prime is 18793835590891. The reversal of 18793835590889 is 98809553839781.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16122899100889 + 2670936490000 = 4015333^2 + 1634300^2 .

It is a cyclic number.

It is not a de Polignac number, because 18793835590889 - 2¹² = 18793835586793 is a prime.

It is a Sophie Germain prime.

Together with 18793835590891, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (18793835580889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9396917795444 + 9396917795445.

It is an arithmetic number, because the mean of its divisors is an integer number (9396917795445).

Almost surely, 2^{18793835590889} is an apocalyptic number.

It is an amenable number.

18793835590889 is a deficient number, since it is larger than the sum of its proper divisors (1).

18793835590889 is an equidigital number, since it uses as much as digits as its factorization.

18793835590889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4702924800, while the sum is 83.

The spelling of 18793835590889 in words is "eighteen trillion, seven hundred ninety-three billion, eight hundred thirty-five million, five hundred ninety thousand, eight hundred eighty-nine".