18135324 has 54 divisors (see below), whose sum is σ = 47556600. Its totient is φ = 5826912.

The previous prime is 18135301. The next prime is 18135347. The reversal of 18135324 is 42353181.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18135301) and next prime (18135347).

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 29977 + ... + 30575.

Almost surely, 2^18135324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18135324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23778300).

18135324 is an abundant number, since it is smaller than the sum of its proper divisors (29421276).

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

18135324 is a wasteful number, since it uses less digits than its factorization.

18135324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 633 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 18135324 is about 4258.5589111811. The cubic root of 18135324 is about 262.7292582191.

The spelling of 18135324 in words is "eighteen million, one hundred thirty-five thousand, three hundred twenty-four".