900900018 has 24 divisors (see below), whose sum is σ = 2036818368. Its totient is φ = 287243352.

The previous prime is 900900001. The next prime is 900900053. The reversal of 900900018 is 810009009.

900900018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 900899964 and 900900000.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1087630 + ... + 1088457.

It is an arithmetic number, because the mean of its divisors is an integer number (84867432).

Almost surely, 2^900900018 is an apocalyptic number.

900900018 is an abundant number, since it is smaller than the sum of its proper divisors (1135918350).

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

900900018 is a wasteful number, since it uses less digits than its factorization.

900900018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176118 (or 2176115 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 900900018 is about 30014.9965517239. The cubic root of 900900018 is about 965.8111136158.

The spelling of 900900018 in words is "nine hundred million, nine hundred thousand, eighteen".