18449834 has 8 divisors (see below), whose sum is σ = 29803620. Its totient is φ = 8515296.

The previous prime is 18449833. The next prime is 18449839. The reversal of 18449834 is 43894481.

It can be written as a sum of positive squares in 2 ways, for example, as 18447025 + 2809 = 4295^2 + 53^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18449791 and 18449800.

It is not an unprimeable number, because it can be changed into a prime (18449833) 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, 354779 + ... + 354830.

Almost surely, 2^18449834 is an apocalyptic number.

18449834 is a deficient number, since it is larger than the sum of its proper divisors (11353786).

18449834 is a wasteful number, since it uses less digits than its factorization.

18449834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709624.

The product of its digits is 110592, while the sum is 41.

The square root of 18449834 is about 4295.3269957013. The cubic root of 18449834 is about 264.2393471406.

The spelling of 18449834 in words is "eighteen million, four hundred forty-nine thousand, eight hundred thirty-four".