18321106 has 16 divisors (see below), whose sum is σ = 28087488. Its totient is φ = 8960400.

The previous prime is 18321103. The next prime is 18321113. The reversal of 18321106 is 60112381.

It is not an unprimeable number, because it can be changed into a prime (18321101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31801 + ... + 32371.

It is an arithmetic number, because the mean of its divisors is an integer number (1755468).

Almost surely, 2^18321106 is an apocalyptic number.

18321106 is a deficient number, since it is larger than the sum of its proper divisors (9766382).

18321106 is a wasteful number, since it uses less digits than its factorization.

18321106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 18321106 is about 4280.3161098218. The cubic root of 18321106 is about 263.6233629088.

Adding to 18321106 its reverse (60112381), we get a palindrome (78433487).

The spelling of 18321106 in words is "eighteen million, three hundred twenty-one thousand, one hundred six".