18322612 has 96 divisors (see below), whose sum is σ = 43868160. Its totient is φ = 6480000.

The previous prime is 18322609. The next prime is 18322649. The reversal of 18322612 is 21622381.

It is a super-3 number, since 3×18322612³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181362 + ... + 181462.

It is an arithmetic number, because the mean of its divisors is an integer number (456960).

Almost surely, 2^18322612 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 18322612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21934080).

18322612 is an abundant number, since it is smaller than the sum of its proper divisors (25545548).

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

18322612 is a wasteful number, since it uses less digits than its factorization.

18322612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 171 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 18322612 is about 4280.4920277931. The cubic root of 18322612 is about 263.6305860154.

Adding to 18322612 its reverse (21622381), we get a palindrome (39944993).

It can be divided in two parts, 1832 and 2612, that added together give a palindrome (4444).

The spelling of 18322612 in words is "eighteen million, three hundred twenty-two thousand, six hundred twelve".