2133666169 has 2 divisors, whose sum is σ = 2133666170. Its totient is φ = 2133666168.

The previous prime is 2133666151. The next prime is 2133666173. The reversal of 2133666169 is 9616663312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1934856169 + 198810000 = 43987^2 + 14100^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133666169 - 2¹¹ = 2133664121 is a prime.

It is a super-2 number, since 2×2133666169² = 9105062641470273122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2133666179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066833084 + 1066833085.

It is an arithmetic number, because the mean of its divisors is an integer number (1066833085).

Almost surely, 2^2133666169 is an apocalyptic number.

It is an amenable number.

2133666169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133666169 is an equidigital number, since it uses as much as digits as its factorization.

2133666169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 43.

The square root of 2133666169 is about 46191.6244464297. The cubic root of 2133666169 is about 1287.3861237643.

The spelling of 2133666169 in words is "two billion, one hundred thirty-three million, six hundred sixty-six thousand, one hundred sixty-nine".