18202002018 has 16 divisors (see below), whose sum is σ = 37659314880. Its totient is φ = 5858115536.

The previous prime is 18202002011. The next prime is 18202002023. The reversal of 18202002018 is 81020020281.

It is not an unprimeable number, because it can be changed into a prime (18202002011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52304430 + ... + 52304777.

It is an arithmetic number, because the mean of its divisors is an integer number (2353707180).

Almost surely, 2^18202002018 is an apocalyptic number.

18202002018 is an abundant number, since it is smaller than the sum of its proper divisors (19457312862).

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

18202002018 is a wasteful number, since it uses less digits than its factorization.

18202002018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104609241.

The product of its (nonzero) digits is 512, while the sum is 24.

Adding to 18202002018 its reverse (81020020281), we get a palindrome (99222022299).

The spelling of 18202002018 in words is "eighteen billion, two hundred two million, two thousand, eighteen".