3656937161 has 2 divisors, whose sum is σ = 3656937162. Its totient is φ = 3656937160.

The previous prime is 3656937139. The next prime is 3656937223. The reversal of 3656937161 is 1617396563.

3656937161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2576171536 + 1080765625 = 50756^2 + 32875^2 .

It is a cyclic number.

It is not a de Polignac number, because 3656937161 - 2¹⁴ = 3656920777 is a prime.

It is not a weakly prime, because it can be changed into another prime (3656937121) 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 as a sum of consecutive naturals, namely, 1828468580 + 1828468581.

It is an arithmetic number, because the mean of its divisors is an integer number (1828468581).

Almost surely, 2^3656937161 is an apocalyptic number.

It is an amenable number.

3656937161 is a deficient number, since it is larger than the sum of its proper divisors (1).

3656937161 is an equidigital number, since it uses as much as digits as its factorization.

3656937161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 47.

The square root of 3656937161 is about 60472.6149674379. The cubic root of 3656937161 is about 1540.6565425977.

The spelling of 3656937161 in words is "three billion, six hundred fifty-six million, nine hundred thirty-seven thousand, one hundred sixty-one".