18002041 has 4 divisors (see below), whose sum is σ = 18582784. Its totient is φ = 17421300.

The previous prime is 18002009. The next prime is 18002051. The reversal of 18002041 is 14020081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18002041 - 2⁵ = 18002009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18002051) 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 in 3 ways as a sum of consecutive naturals, for example, 290325 + ... + 290386.

It is an arithmetic number, because the mean of its divisors is an integer number (4645696).

Almost surely, 2^18002041 is an apocalyptic number.

It is an amenable number.

18002041 is a deficient number, since it is larger than the sum of its proper divisors (580743).

18002041 is an equidigital number, since it uses as much as digits as its factorization.

18002041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580742.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 18002041 is about 4242.8812144579. The cubic root of 18002041 is about 262.0840444783.

The spelling of 18002041 in words is "eighteen million, two thousand, forty-one".