1560566161 has 18 divisors (see below), whose sum is σ = 1995395010. Its totient is φ = 1216020960.

The previous prime is 1560566141. The next prime is 1560566171. The reversal of 1560566161 is 1616650651.

It can be written as a sum of positive squares in only one way, i.e., 1121915025 + 438651136 = 33495^2 + 20944^2 .

It is not a de Polignac number, because 1560566161 - 2¹⁵ = 1560533393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1560566161.

It is not an unprimeable number, because it can be changed into a prime (1560566101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 125676 + ... + 137533.

Almost surely, 2^1560566161 is an apocalyptic number.

1560566161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1560566161 is a deficient number, since it is larger than the sum of its proper divisors (434828849).

1560566161 is a wasteful number, since it uses less digits than its factorization.

1560566161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263245 (or 263227 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 1560566161 is about 39504.0018352571. The cubic root of 1560566161 is about 1159.9182862079.

The spelling of 1560566161 in words is "one billion, five hundred sixty million, five hundred sixty-six thousand, one hundred sixty-one".