2163444077 has 2 divisors, whose sum is σ = 2163444078. Its totient is φ = 2163444076.

The previous prime is 2163444029. The next prime is 2163444083. The reversal of 2163444077 is 7704443612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1393603561 + 769840516 = 37331^2 + 27746^2 .

It is a cyclic number.

It is not a de Polignac number, because 2163444077 - 2¹⁰ = 2163443053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2163444077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2163444097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081722038 + 1081722039.

It is an arithmetic number, because the mean of its divisors is an integer number (1081722039).

Almost surely, 2^2163444077 is an apocalyptic number.

It is an amenable number.

2163444077 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163444077 is an equidigital number, since it uses as much as digits as its factorization.

2163444077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 2163444077 is about 46512.8377655030. The cubic root of 2163444077 is about 1293.3474898295.

Adding to 2163444077 its reverse (7704443612), we get a palindrome (9867887689).

The spelling of 2163444077 in words is "two billion, one hundred sixty-three million, four hundred forty-four thousand, seventy-seven".