1178328061 has 2 divisors, whose sum is σ = 1178328062. Its totient is φ = 1178328060.

The previous prime is 1178328043. The next prime is 1178328071. The reversal of 1178328061 is 1608238711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 728676036 + 449652025 = 26994^2 + 21205^2 .

It is an emirp because it is prime and its reverse (1608238711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1178328061 - 2¹⁷ = 1178196989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1178328061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1178328071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589164030 + 589164031.

It is an arithmetic number, because the mean of its divisors is an integer number (589164031).

Almost surely, 2^1178328061 is an apocalyptic number.

It is an amenable number.

1178328061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1178328061 is an equidigital number, since it uses as much as digits as its factorization.

1178328061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1178328061 is about 34326.7834350963. The cubic root of 1178328061 is about 1056.2224805407. Note that the first 3 decimals are identical.

The spelling of 1178328061 in words is "one billion, one hundred seventy-eight million, three hundred twenty-eight thousand, sixty-one".