18459404 has 12 divisors (see below), whose sum is σ = 32440800. Its totient is φ = 9190608.

The previous prime is 18459403. The next prime is 18459407. The reversal of 18459404 is 40495481.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18459403) 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 3 ways as a sum of consecutive naturals, for example, 8699 + ... + 10610.

It is an arithmetic number, because the mean of its divisors is an integer number (2703400).

Almost surely, 2^18459404 is an apocalyptic number.

It is an amenable number.

18459404 is a deficient number, since it is larger than the sum of its proper divisors (13981396).

18459404 is a wasteful number, since it uses less digits than its factorization.

18459404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19552 (or 19550 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 18459404 is about 4296.4408526128. The cubic root of 18459404 is about 264.2850265661.

The spelling of 18459404 in words is "eighteen million, four hundred fifty-nine thousand, four hundred four".