18229132 has 12 divisors (see below), whose sum is σ = 33580120. Its totient is φ = 8634816.

The previous prime is 18229129. The next prime is 18229157. The reversal of 18229132 is 23192281.

It is a self number, because there is not a number n which added to its sum of digits gives 18229132.

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 3 ways as a sum of consecutive naturals, for example, 119853 + ... + 120004.

Almost surely, 2^18229132 is an apocalyptic number.

It is an amenable number.

18229132 is a deficient number, since it is larger than the sum of its proper divisors (15350988).

18229132 is a wasteful number, since it uses less digits than its factorization.

18229132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239880 (or 239878 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 18229132 is about 4269.5587594036. The cubic root of 18229132 is about 263.1814830701.

The spelling of 18229132 in words is "eighteen million, two hundred twenty-nine thousand, one hundred thirty-two".