18108932 has 6 divisors (see below), whose sum is σ = 31690638. Its totient is φ = 9054464.

The previous prime is 18108931. The next prime is 18108943. The reversal of 18108932 is 23980181.

It can be written as a sum of positive squares in only one way, i.e., 16777216 + 1331716 = 4096^2 + 1154^2 .

It is not an unprimeable number, because it can be changed into a prime (18108931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2263613 + ... + 2263620.

It is an arithmetic number, because the mean of its divisors is an integer number (5281773).

Almost surely, 2^18108932 is an apocalyptic number.

It is an amenable number.

18108932 is a deficient number, since it is larger than the sum of its proper divisors (13581706).

18108932 is a wasteful number, since it uses less digits than its factorization.

18108932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4527237 (or 4527235 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 18108932 is about 4255.4590821673. The cubic root of 18108932 is about 262.6017480090.

The spelling of 18108932 in words is "eighteen million, one hundred eight thousand, nine hundred thirty-two".