1161061160 has 64 divisors (see below), whose sum is σ = 3115411200. Its totient is φ = 380768256.

The previous prime is 1161061123. The next prime is 1161061169. The reversal of 1161061160 is 611601611.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (1161061169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83705 + ... + 96584.

It is an arithmetic number, because the mean of its divisors is an integer number (48678300).

Almost surely, 2^1161061160 is an apocalyptic number.

1161061160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161061160 is an abundant number, since it is smaller than the sum of its proper divisors (1954350040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161061160 is a wasteful number, since it uses less digits than its factorization.

1161061160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180330 (or 180326 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1161061160 is about 34074.3475359397. The cubic root of 1161061160 is about 1051.0378732463.

Adding to 1161061160 its reverse (611601611), we get a palindrome (1772662771).

The spelling of 1161061160 in words is "one billion, one hundred sixty-one million, sixty-one thousand, one hundred sixty".