7491744679 has 2 divisors, whose sum is σ = 7491744680. Its totient is φ = 7491744678.

The previous prime is 7491744661. The next prime is 7491744731. The reversal of 7491744679 is 9764471947.

It is a weak prime.

It is an emirp because it is prime and its reverse (9764471947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7491744679 - 2⁹ = 7491744167 is a prime.

It is a super-2 number, since 2×7491744679² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7491744619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3745872339 + 3745872340.

It is an arithmetic number, because the mean of its divisors is an integer number (3745872340).

Almost surely, 2^7491744679 is an apocalyptic number.

7491744679 is a deficient number, since it is larger than the sum of its proper divisors (1).

7491744679 is an equidigital number, since it uses as much as digits as its factorization.

7491744679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10668672, while the sum is 58.

The square root of 7491744679 is about 86554.8651376686. The cubic root of 7491744679 is about 1956.7153682719.

The spelling of 7491744679 in words is "seven billion, four hundred ninety-one million, seven hundred forty-four thousand, six hundred seventy-nine".