3655645161 has 32 divisors (see below), whose sum is σ = 5727870720. Its totient is φ = 2030655744.

The previous prime is 3655645151. The next prime is 3655645183. The reversal of 3655645161 is 1615465563.

It is not a de Polignac number, because 3655645161 - 2⁹ = 3655644649 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3655645121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106251 + ... + 136383.

It is an arithmetic number, because the mean of its divisors is an integer number (178995960).

Almost surely, 2^3655645161 is an apocalyptic number.

It is an amenable number.

3655645161 is a deficient number, since it is larger than the sum of its proper divisors (2072225559).

3655645161 is a wasteful number, since it uses less digits than its factorization.

3655645161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30305.

The product of its digits is 324000, while the sum is 42.

The square root of 3655645161 is about 60461.9315023925. The cubic root of 3655645161 is about 1540.4750826646.

The spelling of 3655645161 in words is "three billion, six hundred fifty-five million, six hundred forty-five thousand, one hundred sixty-one".