5481649841 has 2 divisors, whose sum is σ = 5481649842. Its totient is φ = 5481649840.

The previous prime is 5481649783. The next prime is 5481649843. The reversal of 5481649841 is 1489461845.

It is a happy number.

5481649841 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3426931600 + 2054718241 = 58540^2 + 45329^2 .

It is a cyclic number.

It is not a de Polignac number, because 5481649841 - 2¹⁸ = 5481387697 is a prime.

Together with 5481649843, 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 5481649841.

It is not a weakly prime, because it can be changed into another prime (5481649843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2740824920 + 2740824921.

It is an arithmetic number, because the mean of its divisors is an integer number (2740824921).

Almost surely, 2^5481649841 is an apocalyptic number.

It is an amenable number.

5481649841 is a deficient number, since it is larger than the sum of its proper divisors (1).

5481649841 is an equidigital number, since it uses as much as digits as its factorization.

5481649841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 50.

The square root of 5481649841 is about 74038.1647598048. The cubic root of 5481649841 is about 1763.2088757332.

The spelling of 5481649841 in words is "five billion, four hundred eighty-one million, six hundred forty-nine thousand, eight hundred forty-one".