6459932161 has 4 divisors (see below), whose sum is σ = 6617491524. Its totient is φ = 6302372800.

The previous prime is 6459932137. The next prime is 6459932201. The reversal of 6459932161 is 1612399546.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 444999025 + 6014933136 = 21095^2 + 77556^2 .

It is a cyclic number.

It is not a de Polignac number, because 6459932161 - 2²¹ = 6457835009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6459930161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78779620 + ... + 78779701.

It is an arithmetic number, because the mean of its divisors is an integer number (1654372881).

Almost surely, 2^6459932161 is an apocalyptic number.

It is an amenable number.

6459932161 is a deficient number, since it is larger than the sum of its proper divisors (157559363).

6459932161 is a wasteful number, since it uses less digits than its factorization.

6459932161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157559362.

The product of its digits is 349920, while the sum is 46.

The square root of 6459932161 is about 80373.7031683871. The cubic root of 6459932161 is about 1862.4129627720.

The spelling of 6459932161 in words is "six billion, four hundred fifty-nine million, nine hundred thirty-two thousand, one hundred sixty-one".