1081795778 has 24 divisors (see below), whose sum is σ = 1916283456. Its totient is φ = 448665480.

The previous prime is 1081795733. The next prime is 1081795807. The reversal of 1081795778 is 8775971801.

It is a happy number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 26750 + ... + 53657.

It is an arithmetic number, because the mean of its divisors is an integer number (79845144).

Almost surely, 2^1081795778 is an apocalyptic number.

1081795778 is a deficient number, since it is larger than the sum of its proper divisors (834487678).

1081795778 is an equidigital number, since it uses as much as digits as its factorization.

1081795778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80478 (or 80447 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 53.

The square root of 1081795778 is about 32890.6639945137. The cubic root of 1081795778 is about 1026.5539081528.

The spelling of 1081795778 in words is "one billion, eighty-one million, seven hundred ninety-five thousand, seven hundred seventy-eight".