3647242161 has 24 divisors (see below), whose sum is σ = 5524777440. Its totient is φ = 2404160352.

The previous prime is 3647242153. The next prime is 3647242177. The reversal of 3647242161 is 1612427463.

3647242161 is a `hidden beast` number, since 3 + 647 + 2 + 4 + 2 + 1 + 6 + 1 = 666.

It is not a de Polignac number, because 3647242161 - 2³ = 3647242153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3647242061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62695 + ... + 105948.

It is an arithmetic number, because the mean of its divisors is an integer number (230199060).

Almost surely, 2^3647242161 is an apocalyptic number.

It is an amenable number.

3647242161 is a deficient number, since it is larger than the sum of its proper divisors (1877535279).

3647242161 is an equidigital number, since it uses as much as digits as its factorization.

3647242161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168747 (or 168735 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 3647242161 is about 60392.4015170783. The cubic root of 3647242161 is about 1539.2938462887.

The spelling of 3647242161 in words is "three billion, six hundred forty-seven million, two hundred forty-two thousand, one hundred sixty-one".