7722381473 has 2 divisors, whose sum is σ = 7722381474. Its totient is φ = 7722381472.

The previous prime is 7722381419. The next prime is 7722381509. The reversal of 7722381473 is 3741832277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7700413504 + 21967969 = 87752^2 + 4687^2 .

It is a cyclic number.

It is not a de Polignac number, because 7722381473 - 2⁸ = 7722381217 is a prime.

It is a super-2 number, since 2×7722381473² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7722381673) 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, 3861190736 + 3861190737.

It is an arithmetic number, because the mean of its divisors is an integer number (3861190737).

Almost surely, 2^7722381473 is an apocalyptic number.

It is an amenable number.

7722381473 is a deficient number, since it is larger than the sum of its proper divisors (1).

7722381473 is an equidigital number, since it uses as much as digits as its factorization.

7722381473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 44.

The square root of 7722381473 is about 87877.0816140363. The cubic root of 7722381473 is about 1976.5922297008.

The spelling of 7722381473 in words is "seven billion, seven hundred twenty-two million, three hundred eighty-one thousand, four hundred seventy-three".