1085607791 has 4 divisors (see below), whose sum is σ = 1085752800. Its totient is φ = 1085462784.

The previous prime is 1085607781. The next prime is 1085607793. The reversal of 1085607791 is 1977065801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1977065801 = 151 ⋅13093151.

It is a cyclic number.

It is not a de Polignac number, because 1085607791 - 2³⁰ = 11865967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085607793) 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, 60626 + ... + 76463.

It is an arithmetic number, because the mean of its divisors is an integer number (271438200).

Almost surely, 2^1085607791 is an apocalyptic number.

1085607791 is a deficient number, since it is larger than the sum of its proper divisors (145009).

1085607791 is an equidigital number, since it uses as much as digits as its factorization.

1085607791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145008.

The product of its (nonzero) digits is 105840, while the sum is 44.

The square root of 1085607791 is about 32948.5628062894. The cubic root of 1085607791 is about 1027.7582788342.

The spelling of 1085607791 in words is "one billion, eighty-five million, six hundred seven thousand, seven hundred ninety-one".