7443442081 has 2 divisors, whose sum is σ = 7443442082. Its totient is φ = 7443442080.

The previous prime is 7443442067. The next prime is 7443442087. The reversal of 7443442081 is 1802443447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7210727056 + 232715025 = 84916^2 + 15255^2 .

It is a cyclic number.

It is not a de Polignac number, because 7443442081 - 2⁵ = 7443442049 is a prime.

It is a super-2 number, since 2×7443442081² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7443442081.

It is not a weakly prime, because it can be changed into another prime (7443442087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3721721040 + 3721721041.

It is an arithmetic number, because the mean of its divisors is an integer number (3721721041).

Almost surely, 2^7443442081 is an apocalyptic number.

It is an amenable number.

7443442081 is a deficient number, since it is larger than the sum of its proper divisors (1).

7443442081 is an equidigital number, since it uses as much as digits as its factorization.

7443442081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 37.

The square root of 7443442081 is about 86275.3851396793. The cubic root of 7443442081 is about 1952.5010276389.

The spelling of 7443442081 in words is "seven billion, four hundred forty-three million, four hundred forty-two thousand, eighty-one".