2159835091 has 4 divisors (see below), whose sum is σ = 2286884232. Its totient is φ = 2032785952.

The previous prime is 2159835037. The next prime is 2159835101. The reversal of 2159835091 is 1905389512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2159835091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2159835991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63524545 + ... + 63524578.

It is an arithmetic number, because the mean of its divisors is an integer number (571721058).

Almost surely, 2^2159835091 is an apocalyptic number.

2159835091 is a deficient number, since it is larger than the sum of its proper divisors (127049141).

2159835091 is a wasteful number, since it uses less digits than its factorization.

2159835091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127049140.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 2159835091 is about 46474.0259822624. The cubic root of 2159835091 is about 1292.6279163606.

The spelling of 2159835091 in words is "two billion, one hundred fifty-nine million, eight hundred thirty-five thousand, ninety-one".