2106903889 has 2 divisors, whose sum is σ = 2106903890. Its totient is φ = 2106903888.

The previous prime is 2106903829. The next prime is 2106903947. The reversal of 2106903889 is 9883096012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2004084289 + 102819600 = 44767^2 + 10140^2 .

It is a cyclic number.

It is not a de Polignac number, because 2106903889 - 2¹⁵ = 2106871121 is a prime.

It is not a weakly prime, because it can be changed into another prime (2106903829) 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, 1053451944 + 1053451945.

It is an arithmetic number, because the mean of its divisors is an integer number (1053451945).

Almost surely, 2^2106903889 is an apocalyptic number.

It is an amenable number.

2106903889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106903889 is an equidigital number, since it uses as much as digits as its factorization.

2106903889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 2106903889 is about 45901.0227445969. The cubic root of 2106903889 is about 1281.9809595328.

The spelling of 2106903889 in words is "two billion, one hundred six million, nine hundred three thousand, eight hundred eighty-nine".