1091102008 has 8 divisors (see below), whose sum is σ = 2045816280. Its totient is φ = 545551000.

The previous prime is 1091101993. The next prime is 1091102011. The reversal of 1091102008 is 8002011901.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1091102008.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 68193868 + ... + 68193883.

It is an arithmetic number, because the mean of its divisors is an integer number (255727035).

Almost surely, 2^1091102008 is an apocalyptic number.

It is an amenable number.

1091102008 is a deficient number, since it is larger than the sum of its proper divisors (954714272).

1091102008 is a wasteful number, since it uses less digits than its factorization.

1091102008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136387757 (or 136387753 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1091102008 is about 33031.8332521827. The cubic root of 1091102008 is about 1029.4891764309.

Adding to 1091102008 its reverse (8002011901), we get a palindrome (9093113909).

The spelling of 1091102008 in words is "one billion, ninety-one million, one hundred two thousand, eight".