2159490317 has 4 divisors (see below), whose sum is σ = 2170679580. Its totient is φ = 2148301056.

The previous prime is 2159490293. The next prime is 2159490343. The reversal of 2159490317 is 7130949512.

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

It can be written as a sum of positive squares in 2 ways, for example, as 444619396 + 1714870921 = 21086^2 + 41411^2 .

It is a cyclic number.

It is not a de Polignac number, because 2159490317 - 2⁶ = 2159490253 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 (2159498317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5594342 + ... + 5594727.

It is an arithmetic number, because the mean of its divisors is an integer number (542669895).

Almost surely, 2^2159490317 is an apocalyptic number.

It is an amenable number.

2159490317 is a deficient number, since it is larger than the sum of its proper divisors (11189263).

2159490317 is a wasteful number, since it uses less digits than its factorization.

2159490317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11189262.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 2159490317 is about 46470.3165149539. The cubic root of 2159490317 is about 1292.5591320639.

The spelling of 2159490317 in words is "two billion, one hundred fifty-nine million, four hundred ninety thousand, three hundred seventeen".