18000309006 has 48 divisors (see below), whose sum is σ = 40907041344. Its totient is φ = 5713716672.

The previous prime is 18000308987. The next prime is 18000309011. The reversal of 18000309006 is 60090300081.

It is a super-2 number, since 2×18000309006² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256225 + ... + 318828.

It is an arithmetic number, because the mean of its divisors is an integer number (852230028).

Almost surely, 2^18000309006 is an apocalyptic number.

18000309006 is an abundant number, since it is smaller than the sum of its proper divisors (22906732338).

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

18000309006 is a wasteful number, since it uses less digits than its factorization.

18000309006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575145 (or 575142 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

Adding to 18000309006 its reverse (60090300081), we get a palindrome (78090609087).

The spelling of 18000309006 in words is "eighteen billion, three hundred nine thousand, six".