18412003 has 4 divisors (see below), whose sum is σ = 19495080. Its totient is φ = 17328928.

The previous prime is 18412001. The next prime is 18412027. The reversal of 18412003 is 30021481.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18412003 - 2¹ = 18412001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18412001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541513 + ... + 541546.

It is an arithmetic number, because the mean of its divisors is an integer number (4873770).

Almost surely, 2^18412003 is an apocalyptic number.

18412003 is a deficient number, since it is larger than the sum of its proper divisors (1083077).

18412003 is a wasteful number, since it uses less digits than its factorization.

18412003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083076.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 18412003 is about 4290.9209967092. The cubic root of 18412003 is about 264.0586177994.

Adding to 18412003 its reverse (30021481), we get a palindrome (48433484).

It can be divided in two parts, 1841 and 2003, that added together give a square (3844 = 62²).

The spelling of 18412003 in words is "eighteen million, four hundred twelve thousand, three".