18037841 has 2 divisors, whose sum is σ = 18037842. Its totient is φ = 18037840.

The previous prime is 18037823. The next prime is 18037847. The reversal of 18037841 is 14873081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17808400 + 229441 = 4220^2 + 479^2 .

It is a cyclic number.

It is not a de Polignac number, because 18037841 - 2⁶ = 18037777 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18037798 and 18037807.

It is not a weakly prime, because it can be changed into another prime (18037847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9018920 + 9018921.

It is an arithmetic number, because the mean of its divisors is an integer number (9018921).

Almost surely, 2^18037841 is an apocalyptic number.

It is an amenable number.

18037841 is a deficient number, since it is larger than the sum of its proper divisors (1).

18037841 is an equidigital number, since it uses as much as digits as its factorization.

18037841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 18037841 is about 4247.0979503656. The cubic root of 18037841 is about 262.2576617557.

The spelling of 18037841 in words is "eighteen million, thirty-seven thousand, eight hundred forty-one".