1096991808 has 168 divisors, whose sum is σ = 3330634944. Its totient is φ = 317813760.

The previous prime is 1096991803. The next prime is 1096991821. The reversal of 1096991808 is 8081996901.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1096991803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 533310 + ... + 535362.

It is an arithmetic number, because the mean of its divisors is an integer number (19825208).

Almost surely, 2^1096991808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1096991808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1665317472).

1096991808 is an abundant number, since it is smaller than the sum of its proper divisors (2233643136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1096991808 is a wasteful number, since it uses less digits than its factorization.

1096991808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113 (or 2092 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 51.

The square root of 1096991808 is about 33120.8666553277. The cubic root of 1096991808 is about 1031.3382573354.

The spelling of 1096991808 in words is "one billion, ninety-six million, nine hundred ninety-one thousand, eight hundred eight".