3668855165 has 4 divisors (see below), whose sum is σ = 4402626204. Its totient is φ = 2935084128.

The previous prime is 3668855147. The next prime is 3668855173. The reversal of 3668855165 is 5615588663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5615588663 = 1951 ⋅2878313.

It can be written as a sum of positive squares in 2 ways, for example, as 2569070596 + 1099784569 = 50686^2 + 33163^2 .

It is a cyclic number.

It is not a de Polignac number, because 3668855165 - 2⁶ = 3668855101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 366885512 + ... + 366885521.

It is an arithmetic number, because the mean of its divisors is an integer number (1100656551).

Almost surely, 2^3668855165 is an apocalyptic number.

It is an amenable number.

3668855165 is a deficient number, since it is larger than the sum of its proper divisors (733771039).

3668855165 is an equidigital number, since it uses as much as digits as its factorization.

3668855165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733771038.

The product of its digits is 5184000, while the sum is 53.

The square root of 3668855165 is about 60571.0753165238. The cubic root of 3668855165 is about 1542.3284006969.

The spelling of 3668855165 in words is "three billion, six hundred sixty-eight million, eight hundred fifty-five thousand, one hundred sixty-five".