6403804361 has 2 divisors, whose sum is σ = 6403804362. Its totient is φ = 6403804360.

The previous prime is 6403804343. The next prime is 6403804367. The reversal of 6403804361 is 1634083046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6086964361 + 316840000 = 78019^2 + 17800^2 .

It is a cyclic number.

It is not a de Polignac number, because 6403804361 - 2¹⁴ = 6403787977 is a prime.

It is not a weakly prime, because it can be changed into another prime (6403804367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3201902180 + 3201902181.

It is an arithmetic number, because the mean of its divisors is an integer number (3201902181).

Almost surely, 2^6403804361 is an apocalyptic number.

It is an amenable number.

6403804361 is a deficient number, since it is larger than the sum of its proper divisors (1).

6403804361 is an equidigital number, since it uses as much as digits as its factorization.

6403804361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 6403804361 is about 80023.7737238129. The cubic root of 6403804361 is about 1857.0033413995.

The spelling of 6403804361 in words is "six billion, four hundred three million, eight hundred four thousand, three hundred sixty-one".