2159317087 has 4 divisors (see below), whose sum is σ = 2159576856. Its totient is φ = 2159057320.

The previous prime is 2159317057. The next prime is 2159317091. The reversal of 2159317087 is 7807139512.

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 2159317087 - 2¹⁵ = 2159284319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159317007) by changing a digit.

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, 116989 + ... + 134182.

It is an arithmetic number, because the mean of its divisors is an integer number (539894214).

Almost surely, 2^2159317087 is an apocalyptic number.

2159317087 is a deficient number, since it is larger than the sum of its proper divisors (259769).

2159317087 is an equidigital number, since it uses as much as digits as its factorization.

2159317087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259768.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 2159317087 is about 46468.4525995863. The cubic root of 2159317087 is about 1292.5245689690.

The spelling of 2159317087 in words is "two billion, one hundred fifty-nine million, three hundred seventeen thousand, eighty-seven".