7782481841 has 2 divisors, whose sum is σ = 7782481842. Its totient is φ = 7782481840.

The previous prime is 7782481829. The next prime is 7782481843. The reversal of 7782481841 is 1481842877.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7452696241 + 329785600 = 86329^2 + 18160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7782481841 is a prime.

Together with 7782481843, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7782481841.

It is not a weakly prime, because it can be changed into another prime (7782481843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3891240920 + 3891240921.

It is an arithmetic number, because the mean of its divisors is an integer number (3891240921).

Almost surely, 2^7782481841 is an apocalyptic number.

It is an amenable number.

7782481841 is a deficient number, since it is larger than the sum of its proper divisors (1).

7782481841 is an equidigital number, since it uses as much as digits as its factorization.

7782481841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 802816, while the sum is 50.

The square root of 7782481841 is about 88218.3758692031. The cubic root of 7782481841 is about 1981.7066740108.

The spelling of 7782481841 in words is "seven billion, seven hundred eighty-two million, four hundred eighty-one thousand, eight hundred forty-one".