18338882741 has 2 divisors, whose sum is σ = 18338882742. Its totient is φ = 18338882740.

The previous prime is 18338882717. The next prime is 18338882747. The reversal of 18338882741 is 14728883381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18325036900 + 13845841 = 135370^2 + 3721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18338882741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18338882747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9169441370 + 9169441371.

It is an arithmetic number, because the mean of its divisors is an integer number (9169441371).

Almost surely, 2^18338882741 is an apocalyptic number.

It is an amenable number.

18338882741 is a deficient number, since it is larger than the sum of its proper divisors (1).

18338882741 is an equidigital number, since it uses as much as digits as its factorization.

18338882741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2064384, while the sum is 53.

The spelling of 18338882741 in words is "eighteen billion, three hundred thirty-eight million, eight hundred eighty-two thousand, seven hundred forty-one".