18200020202 has 32 divisors (see below), whose sum is σ = 33672143232. Its totient is φ = 7184556864.

The previous prime is 18200020177. The next prime is 18200020213. The reversal of 18200020202 is 20202000281.

18200020202 is a modest number, since divided by 20202 gives 18200 as remainder.

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 15 ways as a sum of consecutive naturals, for example, 22073 + ... + 192060.

It is an arithmetic number, because the mean of its divisors is an integer number (1052254476).

Almost surely, 2^18200020202 is an apocalyptic number.

18200020202 is a deficient number, since it is larger than the sum of its proper divisors (15472123030).

18200020202 is a wasteful number, since it uses less digits than its factorization.

18200020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214622.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 18200020202 its reverse (20202000281), we get a palindrome (38402020483).

It can be divided in two parts, 182000 and 20202, that added together give a palindrome (202202).

The spelling of 18200020202 in words is "eighteen billion, two hundred million, twenty thousand, two hundred two".