2180389117 has 2 divisors, whose sum is σ = 2180389118. Its totient is φ = 2180389116.

The previous prime is 2180389109. The next prime is 2180389187. The reversal of 2180389117 is 7119830812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1540248516 + 640140601 = 39246^2 + 25301^2 .

It is a cyclic number.

It is not a de Polignac number, because 2180389117 - 2³ = 2180389109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2180389117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2180389187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090194558 + 1090194559.

It is an arithmetic number, because the mean of its divisors is an integer number (1090194559).

Almost surely, 2^2180389117 is an apocalyptic number.

It is an amenable number.

2180389117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180389117 is an equidigital number, since it uses as much as digits as its factorization.

2180389117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 2180389117 is about 46694.6369190296. The cubic root of 2180389117 is about 1296.7153997834.

The spelling of 2180389117 in words is "two billion, one hundred eighty million, three hundred eighty-nine thousand, one hundred seventeen".