18048473 has 4 divisors (see below), whose sum is σ = 18208308. Its totient is φ = 17888640.

The previous prime is 18048467. The next prime is 18048521. The reversal of 18048473 is 37484081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37484081 = 673 ⋅55697.

It can be written as a sum of positive squares in 2 ways, for example, as 3087049 + 14961424 = 1757^2 + 3868^2 .

It is a cyclic number.

It is not a de Polignac number, because 18048473 - 2⁶ = 18048409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18048403) 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, 79748 + ... + 79973.

It is an arithmetic number, because the mean of its divisors is an integer number (4552077).

Almost surely, 2^18048473 is an apocalyptic number.

It is an amenable number.

18048473 is a deficient number, since it is larger than the sum of its proper divisors (159835).

18048473 is a wasteful number, since it uses less digits than its factorization.

18048473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159834.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 18048473 is about 4248.3494441959. The cubic root of 18048473 is about 262.3091789301.

The spelling of 18048473 in words is "eighteen million, forty-eight thousand, four hundred seventy-three".