1181360657 has 2 divisors, whose sum is σ = 1181360658. Its totient is φ = 1181360656.

The previous prime is 1181360641. The next prime is 1181360659. The reversal of 1181360657 is 7560631811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1181228161 + 132496 = 34369^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 1181360657 - 2⁴ = 1181360641 is a prime.

It is a super-2 number, since 2×1181360657² = 2791226003814943298, which contains 22 as substring.

Together with 1181360659, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1181360657.

It is not a weakly prime, because it can be changed into another prime (1181360659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590680328 + 590680329.

It is an arithmetic number, because the mean of its divisors is an integer number (590680329).

Almost surely, 2^1181360657 is an apocalyptic number.

It is an amenable number.

1181360657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1181360657 is an equidigital number, since it uses as much as digits as its factorization.

1181360657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1181360657 is about 34370.9274969414. The cubic root of 1181360657 is about 1057.1278175806.

The spelling of 1181360657 in words is "one billion, one hundred eighty-one million, three hundred sixty thousand, six hundred fifty-seven".