1086641009 has 2 divisors, whose sum is σ = 1086641010. Its totient is φ = 1086641008.

The previous prime is 1086640903. The next prime is 1086641011. The reversal of 1086641009 is 9001466801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1017418609 + 69222400 = 31897^2 + 8320^2 .

It is an emirp because it is prime and its reverse (9001466801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1086641009 - 2²⁴ = 1069863793 is a prime.

Together with 1086641011, 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 1086641009.

It is not a weakly prime, because it can be changed into another prime (1086641069) 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, 543320504 + 543320505.

It is an arithmetic number, because the mean of its divisors is an integer number (543320505).

Almost surely, 2^1086641009 is an apocalyptic number.

It is an amenable number.

1086641009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1086641009 is an equidigital number, since it uses as much as digits as its factorization.

1086641009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1086641009 is about 32964.2383348986. The cubic root of 1086641009 is about 1028.0842288553.

The spelling of 1086641009 in words is "one billion, eighty-six million, six hundred forty-one thousand, nine".