18084813 has 8 divisors (see below), whose sum is σ = 24701376. Its totient is φ = 11762400.

The previous prime is 18084799. The next prime is 18084851. The reversal of 18084813 is 31848081.

It is a happy number.

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

It is not a de Polignac number, because 18084813 - 2⁹ = 18084301 is a prime.

It is a super-2 number, since 2×18084813² = 654120922489938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18084013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73393 + ... + 73638.

It is an arithmetic number, because the mean of its divisors is an integer number (3087672).

Almost surely, 2^18084813 is an apocalyptic number.

It is an amenable number.

18084813 is a deficient number, since it is larger than the sum of its proper divisors (6616563).

18084813 is a wasteful number, since it uses less digits than its factorization.

18084813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147075.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 18084813 is about 4252.6242486258. The cubic root of 18084813 is about 262.4851111737.

The spelling of 18084813 in words is "eighteen million, eighty-four thousand, eight hundred thirteen".