18041473 has 4 divisors (see below), whose sum is σ = 18623488. Its totient is φ = 17459460.

The previous prime is 18041449. The next prime is 18041483. The reversal of 18041473 is 37414081.

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.

It is a cyclic number.

It is not a de Polignac number, because 18041473 - 2²¹ = 15944321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18041483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290961 + ... + 291022.

It is an arithmetic number, because the mean of its divisors is an integer number (4655872).

Almost surely, 2^18041473 is an apocalyptic number.

It is an amenable number.

18041473 is a deficient number, since it is larger than the sum of its proper divisors (582015).

18041473 is an equidigital number, since it uses as much as digits as its factorization.

18041473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582014.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 18041473 is about 4247.5255149322. The cubic root of 18041473 is about 262.2752628257.

The spelling of 18041473 in words is "eighteen million, forty-one thousand, four hundred seventy-three".