18051908 has 24 divisors (see below), whose sum is σ = 36271872. Its totient is φ = 7700544.

The previous prime is 18051857. The next prime is 18051911. The reversal of 18051908 is 80915081.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 5141 + ... + 7907.

It is an arithmetic number, because the mean of its divisors is an integer number (1511328).

Almost surely, 2^18051908 is an apocalyptic number.

It is an amenable number.

18051908 is an abundant number, since it is smaller than the sum of its proper divisors (18219964).

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

18051908 is a wasteful number, since it uses less digits than its factorization.

18051908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011 (or 3009 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 18051908 is about 4248.7536996159. The cubic root of 18051908 is about 262.3258188397.

Adding to 18051908 its reverse (80915081), we get a palindrome (98966989).

The spelling of 18051908 in words is "eighteen million, fifty-one thousand, nine hundred eight".