18272941 has 4 divisors (see below), whose sum is σ = 18281952. Its totient is φ = 18263932.

The previous prime is 18272939. The next prime is 18272951. The reversal of 18272941 is 14927281.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14927281 = 197 ⋅75773.

It is a cyclic number.

It is not a de Polignac number, because 18272941 - 2¹ = 18272939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18272897 and 18272906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18272951) 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, 120 + ... + 6046.

It is an arithmetic number, because the mean of its divisors is an integer number (4570488).

Almost surely, 2^18272941 is an apocalyptic number.

It is an amenable number.

18272941 is a deficient number, since it is larger than the sum of its proper divisors (9011).

18272941 is an equidigital number, since it uses as much as digits as its factorization.

18272941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9010.

The product of its digits is 8064, while the sum is 34.

The square root of 18272941 is about 4274.6860703448. The cubic root of 18272941 is about 263.3921439265.

The spelling of 18272941 in words is "eighteen million, two hundred seventy-two thousand, nine hundred forty-one".