6449581741 has 2 divisors, whose sum is σ = 6449581742. Its totient is φ = 6449581740.

The previous prime is 6449581729. The next prime is 6449581753. The reversal of 6449581741 is 1471859446.

It is a balanced prime because it is at equal distance from previous prime (6449581729) and next prime (6449581753).

It can be written as a sum of positive squares in only one way, i.e., 5677019716 + 772562025 = 75346^2 + 27795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6449581741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6449584741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3224790870 + 3224790871.

It is an arithmetic number, because the mean of its divisors is an integer number (3224790871).

Almost surely, 2^6449581741 is an apocalyptic number.

It is an amenable number.

6449581741 is a deficient number, since it is larger than the sum of its proper divisors (1).

6449581741 is an equidigital number, since it uses as much as digits as its factorization.

6449581741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 49.

The square root of 6449581741 is about 80309.2880120351. The cubic root of 6449581741 is about 1861.4177479380.

The spelling of 6449581741 in words is "six billion, four hundred forty-nine million, five hundred eighty-one thousand, seven hundred forty-one".