7278328573 has 2 divisors, whose sum is σ = 7278328574. Its totient is φ = 7278328572.

The previous prime is 7278328553. The next prime is 7278328591. The reversal of 7278328573 is 3758238727.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7051464729 + 226863844 = 83973^2 + 15062^2 .

It is an emirp because it is prime and its reverse (3758238727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7278328573 - 2⁹ = 7278328061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7278328573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7278328513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3639164286 + 3639164287.

It is an arithmetic number, because the mean of its divisors is an integer number (3639164287).

Almost surely, 2^7278328573 is an apocalyptic number.

It is an amenable number.

7278328573 is a deficient number, since it is larger than the sum of its proper divisors (1).

7278328573 is an equidigital number, since it uses as much as digits as its factorization.

7278328573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3951360, while the sum is 52.

The square root of 7278328573 is about 85313.1207552508. The cubic root of 7278328573 is about 1937.9558811711.

The spelling of 7278328573 in words is "seven billion, two hundred seventy-eight million, three hundred twenty-eight thousand, five hundred seventy-three".