7730418481 has 2 divisors, whose sum is σ = 7730418482. Its totient is φ = 7730418480.

The previous prime is 7730418391. The next prime is 7730418511. The reversal of 7730418481 is 1848140377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7705328400 + 25090081 = 87780^2 + 5009^2 .

It is an emirp because it is prime and its reverse (1848140377) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7730418481 is a prime.

It is a super-2 number, since 2×7730418481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7730415481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3865209240 + 3865209241.

It is an arithmetic number, because the mean of its divisors is an integer number (3865209241).

Almost surely, 2^7730418481 is an apocalyptic number.

It is an amenable number.

7730418481 is a deficient number, since it is larger than the sum of its proper divisors (1).

7730418481 is an equidigital number, since it uses as much as digits as its factorization.

7730418481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 7730418481 is about 87922.7984142907. The cubic root of 7730418481 is about 1977.2776995810.

The spelling of 7730418481 in words is "seven billion, seven hundred thirty million, four hundred eighteen thousand, four hundred eighty-one".