7049678891 has 2 divisors, whose sum is σ = 7049678892. Its totient is φ = 7049678890.

The previous prime is 7049678879. The next prime is 7049678939. The reversal of 7049678891 is 1988769407.

It is a weak prime.

It is an emirp because it is prime and its reverse (1988769407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7049678891 - 2¹⁴ = 7049662507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7049678891.

It is not a weakly prime, because it can be changed into another prime (7049678861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3524839445 + 3524839446.

It is an arithmetic number, because the mean of its divisors is an integer number (3524839446).

Almost surely, 2^7049678891 is an apocalyptic number.

7049678891 is a deficient number, since it is larger than the sum of its proper divisors (1).

7049678891 is an equidigital number, since it uses as much as digits as its factorization.

7049678891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 59.

The square root of 7049678891 is about 83962.3659206909. The cubic root of 7049678891 is about 1917.4458669480.

The spelling of 7049678891 in words is "seven billion, forty-nine million, six hundred seventy-eight thousand, eight hundred ninety-one".