18090041 has 2 divisors, whose sum is σ = 18090042. Its totient is φ = 18090040.

The previous prime is 18090031. The next prime is 18090043. The reversal of 18090041 is 14009081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9703225 + 8386816 = 3115^2 + 2896^2 .

It is a cyclic number.

It is not a de Polignac number, because 18090041 - 2²² = 13895737 is a prime.

Together with 18090043, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18089989 and 18090016.

It is not a weakly prime, because it can be changed into another prime (18090043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9045020 + 9045021.

It is an arithmetic number, because the mean of its divisors is an integer number (9045021).

Almost surely, 2^18090041 is an apocalyptic number.

It is an amenable number.

18090041 is a deficient number, since it is larger than the sum of its proper divisors (1).

18090041 is an equidigital number, since it uses as much as digits as its factorization.

18090041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 18090041 is about 4253.2388834863. The cubic root of 18090041 is about 262.5104020065.

The spelling of 18090041 in words is "eighteen million, ninety thousand, forty-one".