1099719808 has 32 divisors (see below), whose sum is σ = 2390019120. Its totient is φ = 499872000.

The previous prime is 1099719799. The next prime is 1099719811. The reversal of 1099719808 is 8089179901.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1099719808² = 2418767312215113728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389118 + ... + 391933.

Almost surely, 2^1099719808 is an apocalyptic number.

It is an amenable number.

1099719808 is an abundant number, since it is smaller than the sum of its proper divisors (1290299312).

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

1099719808 is an equidigital number, since it uses as much as digits as its factorization.

1099719808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781076 (or 781064 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 52.

The square root of 1099719808 is about 33162.0235811990. The cubic root of 1099719808 is about 1032.1924605498.

The spelling of 1099719808 in words is "one billion, ninety-nine million, seven hundred nineteen thousand, eight hundred eight".