2109092820 has 24 divisors (see below), whose sum is σ = 5905460064. Its totient is φ = 562424736.

The previous prime is 2109092819. The next prime is 2109092837. The reversal of 2109092820 is 282909012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17575714 + ... + 17575833.

It is an arithmetic number, because the mean of its divisors is an integer number (246060836).

Almost surely, 2^2109092820 is an apocalyptic number.

2109092820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2109092820 is an abundant number, since it is smaller than the sum of its proper divisors (3796367244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2109092820 is a wasteful number, since it uses less digits than its factorization.

2109092820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35151559 (or 35151557 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 2109092820 is about 45924.8605877035. The cubic root of 2109092820 is about 1282.4247697817.

The spelling of 2109092820 in words is "two billion, one hundred nine million, ninety-two thousand, eight hundred twenty".