1085555873 has 4 divisors (see below), whose sum is σ = 1097753220. Its totient is φ = 1073358528.

The previous prime is 1085555789. The next prime is 1085555879. The reversal of 1085555873 is 3785555801.

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 80856064 + 1004699809 = 8992^2 + 31697^2 .

It is a cyclic number.

It is not a de Polignac number, because 1085555873 - 2¹⁰ = 1085554849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1085555879) 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, 6098540 + ... + 6098717.

It is an arithmetic number, because the mean of its divisors is an integer number (274438305).

Almost surely, 2^1085555873 is an apocalyptic number.

It is an amenable number.

1085555873 is a deficient number, since it is larger than the sum of its proper divisors (12197347).

1085555873 is an equidigital number, since it uses as much as digits as its factorization.

1085555873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12197346.

The product of its (nonzero) digits is 840000, while the sum is 47.

The square root of 1085555873 is about 32947.7749324594. The cubic root of 1085555873 is about 1027.7418947695.

The spelling of 1085555873 in words is "one billion, eighty-five million, five hundred fifty-five thousand, eight hundred seventy-three".