2130281806 has 8 divisors (see below), whose sum is σ = 3195620424. Its totient is φ = 1065075000.

The previous prime is 2130281801. The next prime is 2130281809. The reversal of 2130281806 is 6081820312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130281801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38056 + ... + 75556.

It is an arithmetic number, because the mean of its divisors is an integer number (399452553).

Almost surely, 2^2130281806 is an apocalyptic number.

2130281806 is a deficient number, since it is larger than the sum of its proper divisors (1065338618).

2130281806 is a wasteful number, since it uses less digits than its factorization.

2130281806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65906.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2130281806 is about 46154.9759614280. The cubic root of 2130281806 is about 1286.7050913233.

The spelling of 2130281806 in words is "two billion, one hundred thirty million, two hundred eighty-one thousand, eight hundred six".