2010949909 has 2 divisors, whose sum is σ = 2010949910. Its totient is φ = 2010949908.

The previous prime is 2010949901. The next prime is 2010949931. The reversal of 2010949909 is 9099490102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2005069284 + 5880625 = 44778^2 + 2425^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010949909 - 2³ = 2010949901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2010949901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005474954 + 1005474955.

It is an arithmetic number, because the mean of its divisors is an integer number (1005474955).

Almost surely, 2^2010949909 is an apocalyptic number.

It is an amenable number.

2010949909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2010949909 is an equidigital number, since it uses as much as digits as its factorization.

2010949909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 2010949909 is about 44843.6161454448. The cubic root of 2010949909 is about 1262.2162031644.

The spelling of 2010949909 in words is "two billion, ten million, nine hundred forty-nine thousand, nine hundred nine".