2068939091 has 8 divisors (see below), whose sum is σ = 2097543504. Its totient is φ = 2040422400.

The previous prime is 2068939009. The next prime is 2068939099. The reversal of 2068939091 is 1909398602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2068939091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2068939099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26291 + ... + 69491.

It is an arithmetic number, because the mean of its divisors is an integer number (262192938).

Almost surely, 2^2068939091 is an apocalyptic number.

2068939091 is a deficient number, since it is larger than the sum of its proper divisors (28604413).

2068939091 is an equidigital number, since it uses as much as digits as its factorization.

2068939091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43861.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 2068939091 is about 45485.5921254192. The cubic root of 2068939091 is about 1274.2341351582.

The spelling of 2068939091 in words is "two billion, sixty-eight million, nine hundred thirty-nine thousand, ninety-one".