2159918353 has 4 divisors (see below), whose sum is σ = 2162034868. Its totient is φ = 2157801840.

The previous prime is 2159918311. The next prime is 2159918363. The reversal of 2159918353 is 3538199512.

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 954995409 + 1204922944 = 30903^2 + 34712^2 .

It is a cyclic number.

It is not a de Polignac number, because 2159918353 - 2²⁹ = 1623047441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2159918363) 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, 1056726 + ... + 1058767.

It is an arithmetic number, because the mean of its divisors is an integer number (540508717).

Almost surely, 2^2159918353 is an apocalyptic number.

It is an amenable number.

2159918353 is a deficient number, since it is larger than the sum of its proper divisors (2116515).

2159918353 is a wasteful number, since it uses less digits than its factorization.

2159918353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116514.

The product of its digits is 291600, while the sum is 46.

The square root of 2159918353 is about 46474.9217643236. The cubic root of 2159918353 is about 1292.6445264871.

The spelling of 2159918353 in words is "two billion, one hundred fifty-nine million, nine hundred eighteen thousand, three hundred fifty-three".