2109341849 has 2 divisors, whose sum is σ = 2109341850. Its totient is φ = 2109341848.

The previous prime is 2109341837. The next prime is 2109341851. The reversal of 2109341849 is 9481439012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1225350025 + 883991824 = 35005^2 + 29732^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109341849 - 2⁴ = 2109341833 is a prime.

Together with 2109341851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2109341809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054670924 + 1054670925.

It is an arithmetic number, because the mean of its divisors is an integer number (1054670925).

Almost surely, 2^2109341849 is an apocalyptic number.

It is an amenable number.

2109341849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109341849 is an equidigital number, since it uses as much as digits as its factorization.

2109341849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 2109341849 is about 45927.5717733912. The cubic root of 2109341849 is about 1282.4752414642.

The spelling of 2109341849 in words is "two billion, one hundred nine million, three hundred forty-one thousand, eight hundred forty-nine".