2165026673 has 2 divisors, whose sum is σ = 2165026674. Its totient is φ = 2165026672.

The previous prime is 2165026637. The next prime is 2165026681. The reversal of 2165026673 is 3766205612.

Together with previous prime (2165026637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2163459169 + 1567504 = 46513^2 + 1252^2 .

It is a cyclic number.

It is not a de Polignac number, because 2165026673 - 2¹² = 2165022577 is a prime.

It is not a weakly prime, because it can be changed into another prime (2165026603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082513336 + 1082513337.

It is an arithmetic number, because the mean of its divisors is an integer number (1082513337).

Almost surely, 2^2165026673 is an apocalyptic number.

It is an amenable number.

2165026673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165026673 is an equidigital number, since it uses as much as digits as its factorization.

2165026673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 2165026673 is about 46529.8471198864. The cubic root of 2165026673 is about 1293.6627814961.

The spelling of 2165026673 in words is "two billion, one hundred sixty-five million, twenty-six thousand, six hundred seventy-three".