2118563009 has 2 divisors, whose sum is σ = 2118563010. Its totient is φ = 2118563008.

The previous prime is 2118562991. The next prime is 2118563053. The reversal of 2118563009 is 9003658112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1529044609 + 589518400 = 39103^2 + 24280^2 .

It is a cyclic number.

It is not a de Polignac number, because 2118563009 - 2⁸ = 2118562753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2118563009.

It is not a weakly prime, because it can be changed into another prime (2118562009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059281504 + 1059281505.

It is an arithmetic number, because the mean of its divisors is an integer number (1059281505).

Almost surely, 2^2118563009 is an apocalyptic number.

It is an amenable number.

2118563009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2118563009 is an equidigital number, since it uses as much as digits as its factorization.

2118563009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 2118563009 is about 46027.8503625794. The cubic root of 2118563009 is about 1284.3413398858.

The spelling of 2118563009 in words is "two billion, one hundred eighteen million, five hundred sixty-three thousand, nine".