2159108291 has 4 divisors (see below), whose sum is σ = 2159413872. Its totient is φ = 2158802712.

The previous prime is 2159108251. The next prime is 2159108293. The reversal of 2159108291 is 1928019512.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2159108291 - 2³⁰ = 1085366467 is a prime.

It is a super-2 number, since 2×2159108291² = 9323497224529881362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2159108293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141935 + ... + 156408.

It is an arithmetic number, because the mean of its divisors is an integer number (539853468).

Almost surely, 2^2159108291 is an apocalyptic number.

2159108291 is a deficient number, since it is larger than the sum of its proper divisors (305581).

2159108291 is an equidigital number, since it uses as much as digits as its factorization.

2159108291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305580.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 2159108291 is about 46466.2059027849. The cubic root of 2159108291 is about 1292.4829072387.

The spelling of 2159108291 in words is "two billion, one hundred fifty-nine million, one hundred eight thousand, two hundred ninety-one".