18854473 has 8 divisors (see below), whose sum is σ = 21006720. Its totient is φ = 16775280.

The previous prime is 18854461. The next prime is 18854477. The reversal of 18854473 is 37445881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18854473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18854477) 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 7 ways as a sum of consecutive naturals, for example, 17718 + ... + 18751.

It is an arithmetic number, because the mean of its divisors is an integer number (2625840).

Almost surely, 2^18854473 is an apocalyptic number.

It is an amenable number.

18854473 is a deficient number, since it is larger than the sum of its proper divisors (2152247).

18854473 is a wasteful number, since it uses less digits than its factorization.

18854473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36527.

The product of its digits is 107520, while the sum is 40.

The square root of 18854473 is about 4342.1737643719. The cubic root of 18854473 is about 266.1571470469.

The spelling of 18854473 in words is "eighteen million, eight hundred fifty-four thousand, four hundred seventy-three".