2129008186 has 8 divisors (see below), whose sum is σ = 3226435380. Its totient is φ = 1053529728.

The previous prime is 2129008181. The next prime is 2129008187. The reversal of 2129008186 is 6818009212.

It can be written as a sum of positive squares in 2 ways, for example, as 2102681025 + 26327161 = 45855^2 + 5131^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2129008181) 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, 5486941 + ... + 5487328.

Almost surely, 2^2129008186 is an apocalyptic number.

2129008186 is a deficient number, since it is larger than the sum of its proper divisors (1097427194).

2129008186 is a wasteful number, since it uses less digits than its factorization.

2129008186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10974368.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 2129008186 is about 46141.1766863395. The cubic root of 2129008186 is about 1286.4486150783.

It can be divided in two parts, 21 and 29008186, that multiplied together give a palindrome (609171906).

The spelling of 2129008186 in words is "two billion, one hundred twenty-nine million, eight thousand, one hundred eighty-six".