18163931341 has 2 divisors, whose sum is σ = 18163931342. Its totient is φ = 18163931340.

The previous prime is 18163931323. The next prime is 18163931377. The reversal of 18163931341 is 14313936181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11034662116 + 7129269225 = 105046^2 + 84435^2 .

It is an emirp because it is prime and its reverse (14313936181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18163931341 - 2¹⁷ = 18163800269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18163931294 and 18163931303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18163901341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9081965670 + 9081965671.

It is an arithmetic number, because the mean of its divisors is an integer number (9081965671).

Almost surely, 2^18163931341 is an apocalyptic number.

It is an amenable number.

18163931341 is a deficient number, since it is larger than the sum of its proper divisors (1).

18163931341 is an equidigital number, since it uses as much as digits as its factorization.

18163931341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The spelling of 18163931341 in words is "eighteen billion, one hundred sixty-three million, nine hundred thirty-one thousand, three hundred forty-one".