18572103 has 12 divisors (see below), whose sum is σ = 29265288. Its totient is φ = 11255760.

The previous prime is 18572089. The next prime is 18572107. The reversal of 18572103 is 30127581.

It is a de Polignac number, because none of the positive numbers 2^k-18572103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18572107) 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 11 ways as a sum of consecutive naturals, for example, 93700 + ... + 93897.

It is an arithmetic number, because the mean of its divisors is an integer number (2438774).

Almost surely, 2^18572103 is an apocalyptic number.

18572103 is a deficient number, since it is larger than the sum of its proper divisors (10693185).

18572103 is a wasteful number, since it uses less digits than its factorization.

18572103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187614 (or 187611 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 18572103 is about 4309.5362859593. The cubic root of 18572103 is about 264.8217764498.

Adding to 18572103 its reverse (30127581), we get a palindrome (48699684).

The spelling of 18572103 in words is "eighteen million, five hundred seventy-two thousand, one hundred three".