2168444087 has 2 divisors, whose sum is σ = 2168444088. Its totient is φ = 2168444086.

The previous prime is 2168444081. The next prime is 2168444111. The reversal of 2168444087 is 7804448612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2168444087 - 2⁶ = 2168444023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2168444081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084222043 + 1084222044.

It is an arithmetic number, because the mean of its divisors is an integer number (1084222044).

Almost surely, 2^2168444087 is an apocalyptic number.

2168444087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168444087 is an equidigital number, since it uses as much as digits as its factorization.

2168444087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 344064, while the sum is 44.

The square root of 2168444087 is about 46566.5554556057. Note that the first 3 decimals coincide. The cubic root of 2168444087 is about 1294.3430898537.

The spelling of 2168444087 in words is "two billion, one hundred sixty-eight million, four hundred forty-four thousand, eighty-seven".