18287041 has 2 divisors, whose sum is σ = 18287042. Its totient is φ = 18287040.

The previous prime is 18287033. The next prime is 18287051. The reversal of 18287041 is 14078281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17606416 + 680625 = 4196^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 18287041 - 2³ = 18287033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18286994 and 18287012.

It is not a weakly prime, because it can be changed into another prime (18287021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9143520 + 9143521.

It is an arithmetic number, because the mean of its divisors is an integer number (9143521).

Almost surely, 2^18287041 is an apocalyptic number.

It is an amenable number.

18287041 is a deficient number, since it is larger than the sum of its proper divisors (1).

18287041 is an equidigital number, since it uses as much as digits as its factorization.

18287041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 18287041 is about 4276.3349962322. The cubic root of 18287041 is about 263.4598738448.

The spelling of 18287041 in words is "eighteen million, two hundred eighty-seven thousand, forty-one".