2018563840009 has 2 divisors, whose sum is σ = 2018563840010. Its totient is φ = 2018563840008.

The previous prime is 2018563839997. The next prime is 2018563840061. The reversal of 2018563840009 is 9000483658102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1991635030009 + 26928810000 = 1411253^2 + 164100^2 .

It is a cyclic number.

It is not a de Polignac number, because 2018563840009 - 2¹⁵ = 2018563807241 is a prime.

It is not a weakly prime, because it can be changed into another prime (2018563840079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009281920004 + 1009281920005.

It is an arithmetic number, because the mean of its divisors is an integer number (1009281920005).

Almost surely, 2^{2018563840009} is an apocalyptic number.

It is an amenable number.

2018563840009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2018563840009 is an equidigital number, since it uses as much as digits as its factorization.

2018563840009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 2018563840009 in words is "two trillion, eighteen billion, five hundred sixty-three million, eight hundred forty thousand, nine".