18209341 has 2 divisors, whose sum is σ = 18209342. Its totient is φ = 18209340.

The previous prime is 18209333. The next prime is 18209407. The reversal of 18209341 is 14390281.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17884441 + 324900 = 4229^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 18209341 - 2³ = 18209333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18239341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9104670 + 9104671.

It is an arithmetic number, because the mean of its divisors is an integer number (9104671).

Almost surely, 2^18209341 is an apocalyptic number.

It is an amenable number.

18209341 is a deficient number, since it is larger than the sum of its proper divisors (1).

18209341 is an equidigital number, since it uses as much as digits as its factorization.

18209341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18209341 is about 4267.2404431904. The cubic root of 18209341 is about 263.0862049765.

The spelling of 18209341 in words is "eighteen million, two hundred nine thousand, three hundred forty-one".