18815041 has 8 divisors (see below), whose sum is σ = 21867840. Its totient is φ = 15853488.

The previous prime is 18815029. The next prime is 18815057. The reversal of 18815041 is 14051881.

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

It is not a de Polignac number, because 18815041 - 2⁵ = 18815009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18815441) 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, 22366 + ... + 23191.

It is an arithmetic number, because the mean of its divisors is an integer number (2733480).

Almost surely, 2^18815041 is an apocalyptic number.

It is an amenable number.

18815041 is a deficient number, since it is larger than the sum of its proper divisors (3052799).

18815041 is an equidigital number, since it uses as much as digits as its factorization.

18815041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45623.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 18815041 is about 4337.6308049441. The cubic root of 18815041 is about 265.9714716799.

It can be divided in two parts, 188150 and 41, that added together give a triangular number (188191 = T₆₁₃).

The spelling of 18815041 in words is "eighteen million, eight hundred fifteen thousand, forty-one".