1081160161 has 9 divisors (see below), whose sum is σ = 1093834129. Its totient is φ = 1068632500.

The previous prime is 1081160159. The next prime is 1081160167. The reversal of 1081160161 is 1610611801.

The square root of 1081160161 is 32881.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1081160161 - 2¹ = 1081160159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081160167) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4307286 + ... + 4307536.

Almost surely, 2^1081160161 is an apocalyptic number.

1081160161 is the 32881-st square number.

1081160161 is the 16441-st centered octagonal number.

It is an amenable number.

1081160161 is a deficient number, since it is larger than the sum of its proper divisors (12673968).

1081160161 is an frugal number, since it uses more digits than its factorization.

1081160161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 25.

The cubic root of 1081160161 is about 1026.3528156843.

Multiplying 1081160161 by its sum of digits (25), we get a square (27029004025 = 164405²).

Adding to 1081160161 its reverse (1610611801), we get a palindrome (2691771962).

The spelling of 1081160161 in words is "one billion, eighty-one million, one hundred sixty thousand, one hundred sixty-one".