2091305608 has 32 divisors (see below), whose sum is σ = 4576723200. Its totient is φ = 877203072.

The previous prime is 2091305597. The next prime is 2091305633. The reversal of 2091305608 is 8065031902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394653 + ... + 399916.

It is an arithmetic number, because the mean of its divisors is an integer number (143022600).

Almost surely, 2^2091305608 is an apocalyptic number.

2091305608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2091305608 is an abundant number, since it is smaller than the sum of its proper divisors (2485417592).

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

2091305608 is a wasteful number, since it uses less digits than its factorization.

2091305608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794629 (or 794625 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 2091305608 is about 45730.7949635691. The cubic root of 2091305608 is about 1278.8094414791.

The spelling of 2091305608 in words is "two billion, ninety-one million, three hundred five thousand, six hundred eight".