20322004018 has 4 divisors (see below), whose sum is σ = 30483006030. Its totient is φ = 10161002008.

The previous prime is 20322004013. The next prime is 20322004063. The reversal of 20322004018 is 81040022302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12706474729 + 7615529289 = 112723^2 + 87267^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 20322004018.

It is not an unprimeable number, because it can be changed into a prime (20322004013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080501003 + ... + 5080501006.

Almost surely, 2^20322004018 is an apocalyptic number.

20322004018 is a deficient number, since it is larger than the sum of its proper divisors (10161002012).

20322004018 is a wasteful number, since it uses less digits than its factorization.

20322004018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10161002011.

The product of its (nonzero) digits is 768, while the sum is 22.

The spelling of 20322004018 in words is "twenty billion, three hundred twenty-two million, four thousand, eighteen".