18478854 has 20 divisors (see below), whose sum is σ = 41406684. Its totient is φ = 6159564.

The previous prime is 18478853. The next prime is 18478891. The reversal of 18478854 is 45887481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18478853) 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 9 ways as a sum of consecutive naturals, for example, 56872 + ... + 57195.

Almost surely, 2^18478854 is an apocalyptic number.

18478854 is an abundant number, since it is smaller than the sum of its proper divisors (22927830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18478854 is a wasteful number, since it uses less digits than its factorization.

18478854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114081 (or 114072 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 18478854 is about 4298.7037581113. The cubic root of 18478854 is about 264.3778164782.

It can be divided in two parts, 1847 and 8854, that added together give a palindrome (10701).

The spelling of 18478854 in words is "eighteen million, four hundred seventy-eight thousand, eight hundred fifty-four".