2081859229 has 4 divisors (see below), whose sum is σ = 2100282876. Its totient is φ = 2063435584.

The previous prime is 2081859217. The next prime is 2081859251. The reversal of 2081859229 is 9229581802.

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 39000025 + 2042859204 = 6245^2 + 45198^2 .

It is a cyclic number.

It is not a de Polignac number, because 2081859229 - 2¹⁷ = 2081728157 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 (2081859259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9211654 + ... + 9211879.

It is an arithmetic number, because the mean of its divisors is an integer number (525070719).

Almost surely, 2^2081859229 is an apocalyptic number.

It is an amenable number.

2081859229 is a deficient number, since it is larger than the sum of its proper divisors (18423647).

2081859229 is a wasteful number, since it uses less digits than its factorization.

2081859229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18423646.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 2081859229 is about 45627.3955973821. The cubic root of 2081859229 is about 1276.8810842324.

The spelling of 2081859229 in words is "two billion, eighty-one million, eight hundred fifty-nine thousand, two hundred twenty-nine".