3645412161 has 16 divisors (see below), whose sum is σ = 5108013504. Its totient is φ = 2309598144.

The previous prime is 3645412151. The next prime is 3645412217. The reversal of 3645412161 is 1612145463.

It is not a de Polignac number, because 3645412161 - 2⁵ = 3645412129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3645412151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377106 + ... + 386651.

It is an arithmetic number, because the mean of its divisors is an integer number (319250844).

Almost surely, 2^3645412161 is an apocalyptic number.

It is an amenable number.

3645412161 is a deficient number, since it is larger than the sum of its proper divisors (1462601343).

3645412161 is a wasteful number, since it uses less digits than its factorization.

3645412161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763840.

The product of its digits is 17280, while the sum is 33.

The square root of 3645412161 is about 60377.2487034645. The cubic root of 3645412161 is about 1539.0363568513.

The spelling of 3645412161 in words is "three billion, six hundred forty-five million, four hundred twelve thousand, one hundred sixty-one".