2166735589 has 2 divisors, whose sum is σ = 2166735590. Its totient is φ = 2166735588.

The previous prime is 2166735581. The next prime is 2166735611. The reversal of 2166735589 is 9855376612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1506759489 + 659976100 = 38817^2 + 25690^2 .

It is a cyclic number.

It is not a de Polignac number, because 2166735589 - 2³ = 2166735581 is a prime.

It is a super-2 number, since 2×2166735589² = 9389486225278353842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2166735581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083367794 + 1083367795.

It is an arithmetic number, because the mean of its divisors is an integer number (1083367795).

Almost surely, 2^2166735589 is an apocalyptic number.

It is an amenable number.

2166735589 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166735589 is an equidigital number, since it uses as much as digits as its factorization.

2166735589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 52.

The square root of 2166735589 is about 46548.2071512964. The cubic root of 2166735589 is about 1294.0030666970.

The spelling of 2166735589 in words is "two billion, one hundred sixty-six million, seven hundred thirty-five thousand, five hundred eighty-nine".