1091705794 has 16 divisors (see below), whose sum is σ = 1687834296. Its totient is φ = 529200000.

The previous prime is 1091705777. The next prime is 1091705807. The reversal of 1091705794 is 4975071901.

It can be written as a sum of positive squares in 4 ways, for example, as 1055405169 + 36300625 = 32487^2 + 6025^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1091705794.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5457 + ... + 47044.

Almost surely, 2^1091705794 is an apocalyptic number.

1091705794 is a deficient number, since it is larger than the sum of its proper divisors (596128502).

1091705794 is a wasteful number, since it uses less digits than its factorization.

1091705794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52821.

The product of its (nonzero) digits is 79380, while the sum is 43.

The square root of 1091705794 is about 33040.9714445565. The cubic root of 1091705794 is about 1029.6790384619.

The spelling of 1091705794 in words is "one billion, ninety-one million, seven hundred five thousand, seven hundred ninety-four".