2891306339 has 2 divisors, whose sum is σ = 2891306340. Its totient is φ = 2891306338.

The previous prime is 2891306329. The next prime is 2891306359. The reversal of 2891306339 is 9336031982.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2891306339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2891306339.

It is not a weakly prime, because it can be changed into another prime (2891306329) 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, 1445653169 + 1445653170.

It is an arithmetic number, because the mean of its divisors is an integer number (1445653170).

Almost surely, 2^2891306339 is an apocalyptic number.

2891306339 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891306339 is an equidigital number, since it uses as much as digits as its factorization.

2891306339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 2891306339 is about 53770.8688696770. The cubic root of 2891306339 is about 1424.6167166977.

The spelling of 2891306339 in words is "two billion, eight hundred ninety-one million, three hundred six thousand, three hundred thirty-nine".