18419128 has 32 divisors (see below), whose sum is σ = 42507360. Its totient is φ = 7286400.

The previous prime is 18419119. The next prime is 18419129. The reversal of 18419128 is 82191481.

It is a junction number, because it is equal to n+sod(n) for n = 18419093 and 18419102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18419129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11923 + ... + 13378.

It is an arithmetic number, because the mean of its divisors is an integer number (1328355).

Almost surely, 2^18419128 is an apocalyptic number.

It is an amenable number.

18419128 is an abundant number, since it is smaller than the sum of its proper divisors (24088232).

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

18419128 is a wasteful number, since it uses less digits than its factorization.

18419128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25327 (or 25323 counting only the distinct ones).

The product of its digits is 4608, while the sum is 34.

The square root of 18419128 is about 4291.7511577444. The cubic root of 18419128 is about 264.0926748403.

The spelling of 18419128 in words is "eighteen million, four hundred nineteen thousand, one hundred twenty-eight".