1178411161 has 2 divisors, whose sum is σ = 1178411162. Its totient is φ = 1178411160.

The previous prime is 1178411147. The next prime is 1178411183. The reversal of 1178411161 is 1611148711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1128624025 + 49787136 = 33595^2 + 7056^2 .

It is a cyclic number.

It is not a de Polignac number, because 1178411161 - 2²⁵ = 1144856729 is a prime.

It is not a weakly prime, because it can be changed into another prime (1178411191) 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 as a sum of consecutive naturals, namely, 589205580 + 589205581.

It is an arithmetic number, because the mean of its divisors is an integer number (589205581).

Almost surely, 2^1178411161 is an apocalyptic number.

It is an amenable number.

1178411161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1178411161 is an equidigital number, since it uses as much as digits as its factorization.

1178411161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 31.

The square root of 1178411161 is about 34327.9938388482. The cubic root of 1178411161 is about 1056.2473095131.

Adding to 1178411161 its reverse (1611148711), we get a palindrome (2789559872).

The spelling of 1178411161 in words is "one billion, one hundred seventy-eight million, four hundred eleven thousand, one hundred sixty-one".