788660161 has 2 divisors, whose sum is σ = 788660162. Its totient is φ = 788660160.

The previous prime is 788660137. The next prime is 788660167. The reversal of 788660161 is 161066887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 626250625 + 162409536 = 25025^2 + 12744^2 .

It is an emirp because it is prime and its reverse (161066887) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 788660161 - 2⁹ = 788659649 is a prime.

It is not a weakly prime, because it can be changed into another prime (788660167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394330080 + 394330081.

It is an arithmetic number, because the mean of its divisors is an integer number (394330081).

Almost surely, 2^788660161 is an apocalyptic number.

It is an amenable number.

788660161 is a deficient number, since it is larger than the sum of its proper divisors (1).

788660161 is an equidigital number, since it uses as much as digits as its factorization.

788660161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 788660161 is about 28083.0938644587. The cubic root of 788660161 is about 923.9106381005.

The spelling of 788660161 in words is "seven hundred eighty-eight million, six hundred sixty thousand, one hundred sixty-one".