1087682209 has 4 divisors (see below), whose sum is σ = 1088058004. Its totient is φ = 1087306416.

The previous prime is 1087682203. The next prime is 1087682249. The reversal of 1087682209 is 9022867801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 965469184 + 122213025 = 31072^2 + 11055^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087682209 - 2³ = 1087682201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1087682201) 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 in 3 ways as a sum of consecutive naturals, for example, 183522 + ... + 189355.

It is an arithmetic number, because the mean of its divisors is an integer number (272014501).

Almost surely, 2^1087682209 is an apocalyptic number.

It is an amenable number.

1087682209 is a deficient number, since it is larger than the sum of its proper divisors (375795).

1087682209 is an equidigital number, since it uses as much as digits as its factorization.

1087682209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375794.

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

The square root of 1087682209 is about 32980.0274257011. The cubic root of 1087682209 is about 1028.4124880135.

The spelling of 1087682209 in words is "one billion, eighty-seven million, six hundred eighty-two thousand, two hundred nine".