1161685711 has 2 divisors, whose sum is σ = 1161685712. Its totient is φ = 1161685710.

The previous prime is 1161685709. The next prime is 1161685787. The reversal of 1161685711 is 1175861611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1161685711 - 2¹ = 1161685709 is a prime.

It is a super-2 number, since 2×1161685711² = 2699027382283151042, which contains 22 as substring.

Together with 1161685709, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161685211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580842855 + 580842856.

It is an arithmetic number, because the mean of its divisors is an integer number (580842856).

Almost surely, 2^1161685711 is an apocalyptic number.

1161685711 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161685711 is an equidigital number, since it uses as much as digits as its factorization.

1161685711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 37.

The square root of 1161685711 is about 34083.5108373536. The cubic root of 1161685711 is about 1051.2262954450.

The spelling of 1161685711 in words is "one billion, one hundred sixty-one million, six hundred eighty-five thousand, seven hundred eleven".