1168737161 has 2 divisors, whose sum is σ = 1168737162. Its totient is φ = 1168737160.

The previous prime is 1168737151. The next prime is 1168737173. The reversal of 1168737161 is 1617378611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 819047161 + 349690000 = 28619^2 + 18700^2 .

It is an emirp because it is prime and its reverse (1617378611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1168737161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1168737121) 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, 584368580 + 584368581.

It is an arithmetic number, because the mean of its divisors is an integer number (584368581).

Almost surely, 2^1168737161 is an apocalyptic number.

It is an amenable number.

1168737161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168737161 is an equidigital number, since it uses as much as digits as its factorization.

1168737161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 41.

The square root of 1168737161 is about 34186.7980512946. The cubic root of 1168737161 is about 1053.3489928394.

The spelling of 1168737161 in words is "one billion, one hundred sixty-eight million, seven hundred thirty-seven thousand, one hundred sixty-one".