6405734161 has 2 divisors, whose sum is σ = 6405734162. Its totient is φ = 6405734160.

The previous prime is 6405734131. The next prime is 6405734173. The reversal of 6405734161 is 1614375046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3579748561 + 2825985600 = 59831^2 + 53160^2 .

It is a cyclic number.

It is not a de Polignac number, because 6405734161 - 2¹³ = 6405725969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6405734161.

It is not a weakly prime, because it can be changed into another prime (6405734131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202867080 + 3202867081.

It is an arithmetic number, because the mean of its divisors is an integer number (3202867081).

Almost surely, 2^6405734161 is an apocalyptic number.

It is an amenable number.

6405734161 is a deficient number, since it is larger than the sum of its proper divisors (1).

6405734161 is an equidigital number, since it uses as much as digits as its factorization.

6405734161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 6405734161 is about 80035.8304823533. The cubic root of 6405734161 is about 1857.1898599609.

The spelling of 6405734161 in words is "six billion, four hundred five million, seven hundred thirty-four thousand, one hundred sixty-one".