2106935009 has 2 divisors, whose sum is σ = 2106935010. Its totient is φ = 2106935008.

The previous prime is 2106934981. The next prime is 2106935041. The reversal of 2106935009 is 9005396012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1889814784 + 217120225 = 43472^2 + 14735^2 .

It is a cyclic number.

It is not a de Polignac number, because 2106935009 - 2¹² = 2106930913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2106935009.

It is not a weakly prime, because it can be changed into another prime (2106935209) 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, 1053467504 + 1053467505.

It is an arithmetic number, because the mean of its divisors is an integer number (1053467505).

Almost surely, 2^2106935009 is an apocalyptic number.

It is an amenable number.

2106935009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106935009 is an equidigital number, since it uses as much as digits as its factorization.

2106935009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 2106935009 is about 45901.3617336131. The cubic root of 2106935009 is about 1281.9872713302.

The spelling of 2106935009 in words is "two billion, one hundred six million, nine hundred thirty-five thousand, nine".