2118666133 has 2 divisors, whose sum is σ = 2118666134. Its totient is φ = 2118666132.

The previous prime is 2118666127. The next prime is 2118666169. The reversal of 2118666133 is 3316668112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2116644049 + 2022084 = 46007^2 + 1422^2 .

It is a cyclic number.

It is not a de Polignac number, because 2118666133 - 2¹⁷ = 2118535061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2118666092 and 2118666101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2118666113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059333066 + 1059333067.

It is an arithmetic number, because the mean of its divisors is an integer number (1059333067).

Almost surely, 2^2118666133 is an apocalyptic number.

It is an amenable number.

2118666133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2118666133 is an equidigital number, since it uses as much as digits as its factorization.

2118666133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 2118666133 is about 46028.9705837530. The cubic root of 2118666133 is about 1284.3621785812.

The spelling of 2118666133 in words is "two billion, one hundred eighteen million, six hundred sixty-six thousand, one hundred thirty-three".