1091774968 has 8 divisors (see below), whose sum is σ = 2047078080. Its totient is φ = 545887480.

The previous prime is 1091774939. The next prime is 1091774993. The reversal of 1091774968 is 8694771901.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent 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 as a sum of consecutive naturals, namely, 68235928 + ... + 68235943.

It is an arithmetic number, because the mean of its divisors is an integer number (255884760).

Almost surely, 2^1091774968 is an apocalyptic number.

It is an amenable number.

1091774968 is a deficient number, since it is larger than the sum of its proper divisors (955303112).

1091774968 is a wasteful number, since it uses less digits than its factorization.

1091774968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136471877 (or 136471873 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 52.

The square root of 1091774968 is about 33042.0182192311. The cubic root of 1091774968 is about 1029.7007859308.

The spelling of 1091774968 in words is "one billion, ninety-one million, seven hundred seventy-four thousand, nine hundred sixty-eight".