3161664565 has 8 divisors (see below), whose sum is σ = 3858302880. Its totient is φ = 2486461392.

The previous prime is 3161664559. The next prime is 3161664599. The reversal of 3161664565 is 5654661613.

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 3161664565 - 2³ = 3161664557 is a prime.

It is a super-2 number, since 2×3161664565² = 19992245643153278450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5358459 + ... + 5359048.

It is an arithmetic number, because the mean of its divisors is an integer number (482287860).

Almost surely, 2^3161664565 is an apocalyptic number.

It is an amenable number.

3161664565 is a deficient number, since it is larger than the sum of its proper divisors (696638315).

3161664565 is a wasteful number, since it uses less digits than its factorization.

3161664565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10717571.

The product of its digits is 388800, while the sum is 43.

The square root of 3161664565 is about 56228.6809822176. The cubic root of 3161664565 is about 1467.7044036349.

The spelling of 3161664565 in words is "three billion, one hundred sixty-one million, six hundred sixty-four thousand, five hundred sixty-five".