18171341 has 2 divisors, whose sum is σ = 18171342. Its totient is φ = 18171340.

The previous prime is 18171289. The next prime is 18171347. The reversal of 18171341 is 14317181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15768841 + 2402500 = 3971^2 + 1550^2 .

It is an emirp because it is prime and its reverse (14317181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18171341 - 2¹⁸ = 17909197 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18171341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18171347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9085670 + 9085671.

It is an arithmetic number, because the mean of its divisors is an integer number (9085671).

Almost surely, 2^18171341 is an apocalyptic number.

It is an amenable number.

18171341 is a deficient number, since it is larger than the sum of its proper divisors (1).

18171341 is an equidigital number, since it uses as much as digits as its factorization.

18171341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 26.

The square root of 18171341 is about 4262.7855916056. The cubic root of 18171341 is about 262.9030711643.

The spelling of 18171341 in words is "eighteen million, one hundred seventy-one thousand, three hundred forty-one".