2102806837 has 16 divisors (see below), whose sum is σ = 2177199360. Its totient is φ = 2029805568.

The previous prime is 2102806831. The next prime is 2102806861. The reversal of 2102806837 is 7386082012.

It is a cyclic number.

It is not a de Polignac number, because 2102806837 - 2⁷ = 2102806709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102806796 and 2102806805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102806831) 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 15 ways as a sum of consecutive naturals, for example, 1727253 + ... + 1728469.

It is an arithmetic number, because the mean of its divisors is an integer number (136074960).

Almost surely, 2^2102806837 is an apocalyptic number.

It is an amenable number.

2102806837 is a deficient number, since it is larger than the sum of its proper divisors (74392523).

2102806837 is a wasteful number, since it uses less digits than its factorization.

2102806837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 2102806837 is about 45856.3718255162. The cubic root of 2102806837 is about 1281.1494470142.

Adding to 2102806837 its reverse (7386082012), we get a palindrome (9488888849).

The spelling of 2102806837 in words is "two billion, one hundred two million, eight hundred six thousand, eight hundred thirty-seven".