1606160565 has 24 divisors (see below), whose sum is σ = 2859258168. Its totient is φ = 833466240.

The previous prime is 1606160513. The next prime is 1606160581. The reversal of 1606160565 is 5650616061.

It can be written as a sum of positive squares in 4 ways, for example, as 39425841 + 1566734724 = 6279^2 + 39582^2 .

It is not a de Polignac number, because 1606160565 - 2⁹ = 1606160053 is a prime.

It is a super-2 number, since 2×1606160565² = 5159503521122238450, which contains 22 as substring.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 480666 + ... + 483995.

It is an arithmetic number, because the mean of its divisors is an integer number (119135757).

Almost surely, 2^1606160565 is an apocalyptic number.

1606160565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1606160565 is a deficient number, since it is larger than the sum of its proper divisors (1253097603).

1606160565 is a wasteful number, since it uses less digits than its factorization.

1606160565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964709 (or 964706 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 1606160565 is about 40076.9330787674. The cubic root of 1606160565 is about 1171.1063062093.

It can be divided in two parts, 160616056 and 5, that added together give a palindrome (160616061).

The spelling of 1606160565 in words is "one billion, six hundred six million, one hundred sixty thousand, five hundred sixty-five".