18241458765853 has 2 divisors, whose sum is σ = 18241458765854. Its totient is φ = 18241458765852.

The previous prime is 18241458765841. The next prime is 18241458765911. The reversal of 18241458765853 is 35856785414281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13324054945369 + 4917403820484 = 3650213^2 + 2217522^2 .

It is a cyclic number.

It is not a de Polignac number, because 18241458765853 - 2⁴¹ = 16042435510301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18241458765833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9120729382926 + 9120729382927.

It is an arithmetic number, because the mean of its divisors is an integer number (9120729382927).

Almost surely, 2^{18241458765853} is an apocalyptic number.

It is an amenable number.

18241458765853 is a deficient number, since it is larger than the sum of its proper divisors (1).

18241458765853 is an equidigital number, since it uses as much as digits as its factorization.

18241458765853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048000, while the sum is 67.

The spelling of 18241458765853 in words is "eighteen trillion, two hundred forty-one billion, four hundred fifty-eight million, seven hundred sixty-five thousand, eight hundred fifty-three".