18212041 has 8 divisors (see below), whose sum is σ = 18514944. Its totient is φ = 17911680.

The previous prime is 18212027. The next prime is 18212057. The reversal of 18212041 is 14021281.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18212041 - 2⁵ = 18212009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18212011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18036 + ... + 19018.

It is an arithmetic number, because the mean of its divisors is an integer number (2314368).

Almost surely, 2^18212041 is an apocalyptic number.

It is an amenable number.

18212041 is a deficient number, since it is larger than the sum of its proper divisors (302903).

18212041 is an equidigital number, since it uses as much as digits as its factorization.

18212041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 18212041 is about 4267.5567951698. The cubic root of 18212041 is about 263.0992074176.

The spelling of 18212041 in words is "eighteen million, two hundred twelve thousand, forty-one".