2173106389 has 2 divisors, whose sum is σ = 2173106390. Its totient is φ = 2173106388.

The previous prime is 2173106363. The next prime is 2173106431. The reversal of 2173106389 is 9836013712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1731392100 + 441714289 = 41610^2 + 21017^2 .

It is a cyclic number.

It is not a de Polignac number, because 2173106389 - 2⁵ = 2173106357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2173106359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086553194 + 1086553195.

It is an arithmetic number, because the mean of its divisors is an integer number (1086553195).

Almost surely, 2^2173106389 is an apocalyptic number.

It is an amenable number.

2173106389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173106389 is an equidigital number, since it uses as much as digits as its factorization.

2173106389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 2173106389 is about 46616.5892038446. The cubic root of 2173106389 is about 1295.2700676539.

The spelling of 2173106389 in words is "two billion, one hundred seventy-three million, one hundred six thousand, three hundred eighty-nine".