3421664165 has 8 divisors (see below), whose sum is σ = 4114906488. Its totient is φ = 2731391680.

The previous prime is 3421664159. The next prime is 3421664177. The reversal of 3421664165 is 5614661243.

It can be written as a sum of positive squares in 4 ways, for example, as 1012130596 + 2409533569 = 31814^2 + 49087^2 .

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

It is not a de Polignac number, because 3421664165 - 2¹² = 3421660069 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 7 ways as a sum of consecutive naturals, for example, 739922 + ... + 744531.

It is an arithmetic number, because the mean of its divisors is an integer number (514363311).

Almost surely, 2^3421664165 is an apocalyptic number.

It is an amenable number.

3421664165 is a deficient number, since it is larger than the sum of its proper divisors (693242323).

3421664165 is a wasteful number, since it uses less digits than its factorization.

3421664165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484919.

The product of its digits is 103680, while the sum is 38.

The square root of 3421664165 is about 58494.9926489439. The cubic root of 3421664165 is about 1506.8815904917.

The spelling of 3421664165 in words is "three billion, four hundred twenty-one million, six hundred sixty-four thousand, one hundred sixty-five".