1161113177 has 16 divisors (see below), whose sum is σ = 1338070272. Its totient is φ = 986964480.

The previous prime is 1161113171. The next prime is 1161113203. The reversal of 1161113177 is 7713111611.

It is a cyclic number.

It is not a de Polignac number, because 1161113177 - 2⁶ = 1161113113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1161113171) 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, 442373 + ... + 444989.

It is an arithmetic number, because the mean of its divisors is an integer number (83629392).

Almost surely, 2^1161113177 is an apocalyptic number.

It is an amenable number.

1161113177 is a deficient number, since it is larger than the sum of its proper divisors (176957095).

1161113177 is a wasteful number, since it uses less digits than its factorization.

1161113177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128.

The product of its digits is 882, while the sum is 29.

The square root of 1161113177 is about 34075.1108141999. The cubic root of 1161113177 is about 1051.0535689514.

Adding to 1161113177 its reverse (7713111611), we get a palindrome (8874224788).

The spelling of 1161113177 in words is "one billion, one hundred sixty-one million, one hundred thirteen thousand, one hundred seventy-seven".