2108385289 has 8 divisors (see below), whose sum is σ = 2181636360. Its totient is φ = 2035170816.

The previous prime is 2108385281. The next prime is 2108385311. The reversal of 2108385289 is 9825838012.

It can be written as a sum of positive squares in 4 ways, for example, as 626751225 + 1481634064 = 25035^2 + 38492^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2108385289 - 2³ = 2108385281 is a prime.

It is a super-2 number, since 2×2108385289² = 8890577053743227042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2108385281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163647 + ... + 176059.

It is an arithmetic number, because the mean of its divisors is an integer number (272704545).

Almost surely, 2^2108385289 is an apocalyptic number.

2108385289 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2108385289 is a deficient number, since it is larger than the sum of its proper divisors (73251071).

2108385289 is a wasteful number, since it uses less digits than its factorization.

2108385289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18299.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 2108385289 is about 45917.1568044016. The cubic root of 2108385289 is about 1282.2813500212.

The spelling of 2108385289 in words is "two billion, one hundred eight million, three hundred eighty-five thousand, two hundred eighty-nine".