2097691808 has 24 divisors (see below), whose sum is σ = 4347191520. Its totient is φ = 993643200.

The previous prime is 2097691781. The next prime is 2097691867. The reversal of 2097691808 is 8081967902.

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 in 3 ways as a sum of consecutive naturals, for example, 1724468 + ... + 1725683.

It is an arithmetic number, because the mean of its divisors is an integer number (181132980).

Almost surely, 2^2097691808 is an apocalyptic number.

It is an amenable number.

2097691808 is an abundant number, since it is smaller than the sum of its proper divisors (2249499712).

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

2097691808 is a wasteful number, since it uses less digits than its factorization.

2097691808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450180 (or 3450172 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 2097691808 is about 45800.5655860274. The cubic root of 2097691808 is about 1280.1098147972.

The spelling of 2097691808 in words is "two billion, ninety-seven million, six hundred ninety-one thousand, eight hundred eight".