3521656165 has 8 divisors (see below), whose sum is σ = 4474575000. Its totient is φ = 2651599872.

The previous prime is 3521656153. The next prime is 3521656181. The reversal of 3521656165 is 5616561253.

3521656165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 86992929 + 3434663236 = 9327^2 + 58606^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3521656165 - 2⁹ = 3521655653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20715540 + ... + 20715709.

It is an arithmetic number, because the mean of its divisors is an integer number (559321875).

Almost surely, 2^3521656165 is an apocalyptic number.

It is an amenable number.

3521656165 is a deficient number, since it is larger than the sum of its proper divisors (952918835).

3521656165 is a wasteful number, since it uses less digits than its factorization.

3521656165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41431271.

The product of its digits is 162000, while the sum is 40.

The square root of 3521656165 is about 59343.5435831060. The cubic root of 3521656165 is about 1521.4195195027.

The spelling of 3521656165 in words is "three billion, five hundred twenty-one million, six hundred fifty-six thousand, one hundred sixty-five".