2012605709 has 2 divisors, whose sum is σ = 2012605710. Its totient is φ = 2012605708.

The previous prime is 2012605657. The next prime is 2012605739. The reversal of 2012605709 is 9075062102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1527637225 + 484968484 = 39085^2 + 22022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012605709 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012605739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006302854 + 1006302855.

It is an arithmetic number, because the mean of its divisors is an integer number (1006302855).

Almost surely, 2^2012605709 is an apocalyptic number.

It is an amenable number.

2012605709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012605709 is an equidigital number, since it uses as much as digits as its factorization.

2012605709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 2012605709 is about 44862.0742832964. The cubic root of 2012605709 is about 1262.5625410184.

The spelling of 2012605709 in words is "two billion, twelve million, six hundred five thousand, seven hundred nine".