1081905775 has 6 divisors (see below), whose sum is σ = 1341563192. Its totient is φ = 865524600.

The previous prime is 1081905751. The next prime is 1081905787. The reversal of 1081905775 is 5775091801.

It is not a de Polignac number, because 1081905775 - 2⁵ = 1081905743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21638091 + ... + 21638140.

Almost surely, 2^1081905775 is an apocalyptic number.

1081905775 is a deficient number, since it is larger than the sum of its proper divisors (259657417).

1081905775 is an equidigital number, since it uses as much as digits as its factorization.

1081905775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43276241 (or 43276236 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 43.

The square root of 1081905775 is about 32892.3361134475. The cubic root of 1081905775 is about 1026.5887003090.

The spelling of 1081905775 in words is "one billion, eighty-one million, nine hundred five thousand, seven hundred seventy-five".