1086508805 has 4 divisors (see below), whose sum is σ = 1303810572. Its totient is φ = 869207040.

The previous prime is 1086508793. The next prime is 1086508807. The reversal of 1086508805 is 5088056801.

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 161010721 + 925498084 = 12689^2 + 30422^2 .

It is not a de Polignac number, because 1086508805 - 2⁴ = 1086508789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1086508807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108650876 + ... + 108650885.

It is an arithmetic number, because the mean of its divisors is an integer number (325952643).

Almost surely, 2^1086508805 is an apocalyptic number.

It is an amenable number.

1086508805 is a deficient number, since it is larger than the sum of its proper divisors (217301767).

1086508805 is an equidigital number, since it uses as much as digits as its factorization.

1086508805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217301766.

The product of its (nonzero) digits is 76800, while the sum is 41.

The square root of 1086508805 is about 32962.2330099161. The cubic root of 1086508805 is about 1028.0425338955.

The spelling of 1086508805 in words is "one billion, eighty-six million, five hundred eight thousand, eight hundred five".