2641268309 has 2 divisors, whose sum is σ = 2641268310. Its totient is φ = 2641268308.

The previous prime is 2641268297. The next prime is 2641268321. The reversal of 2641268309 is 9038621462.

It is a balanced prime because it is at equal distance from previous prime (2641268297) and next prime (2641268321).

It can be written as a sum of positive squares in only one way, i.e., 2640418225 + 850084 = 51385^2 + 922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2641268309 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 (2641268369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320634154 + 1320634155.

It is an arithmetic number, because the mean of its divisors is an integer number (1320634155).

Almost surely, 2^2641268309 is an apocalyptic number.

It is an amenable number.

2641268309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2641268309 is an equidigital number, since it uses as much as digits as its factorization.

2641268309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 2641268309 is about 51393.2710478716. The cubic root of 2641268309 is about 1382.3059376385.

The spelling of 2641268309 in words is "two billion, six hundred forty-one million, two hundred sixty-eight thousand, three hundred nine".