6408867841 has 2 divisors, whose sum is σ = 6408867842. Its totient is φ = 6408867840.

The previous prime is 6408867833. The next prime is 6408867901. The reversal of 6408867841 is 1487688046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6293090241 + 115777600 = 79329^2 + 10760^2 .

It is a cyclic number.

It is not a de Polignac number, because 6408867841 - 2³ = 6408867833 is a prime.

It is not a weakly prime, because it can be changed into another prime (6408867541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3204433920 + 3204433921.

It is an arithmetic number, because the mean of its divisors is an integer number (3204433921).

Almost surely, 2^6408867841 is an apocalyptic number.

It is an amenable number.

6408867841 is a deficient number, since it is larger than the sum of its proper divisors (1).

6408867841 is an equidigital number, since it uses as much as digits as its factorization.

6408867841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2064384, while the sum is 52.

The square root of 6408867841 is about 80055.4048206615. The cubic root of 6408867841 is about 1857.4926558524.

The spelling of 6408867841 in words is "six billion, four hundred eight million, eight hundred sixty-seven thousand, eight hundred forty-one".