18202002004 has 6 divisors (see below), whose sum is σ = 31853503514. Its totient is φ = 9101001000.

The previous prime is 18202002001. The next prime is 18202002011. The reversal of 18202002004 is 40020020281.

It can be written as a sum of positive squares in only one way, i.e., 18198010000 + 3992004 = 134900^2 + 1998^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18202002001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2275250247 + ... + 2275250254.

Almost surely, 2^18202002004 is an apocalyptic number.

It is an amenable number.

18202002004 is a deficient number, since it is larger than the sum of its proper divisors (13651501510).

18202002004 is a wasteful number, since it uses less digits than its factorization.

18202002004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4550500505 (or 4550500503 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 18202002004 its reverse (40020020281), we get a palindrome (58222022285).

The spelling of 18202002004 in words is "eighteen billion, two hundred two million, two thousand, four".