2084785309 has 4 divisors (see below), whose sum is σ = 2152036480. Its totient is φ = 2017534140.

The previous prime is 2084785301. The next prime is 2084785363. The reversal of 2084785309 is 9035874802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2084785309 - 2³ = 2084785301 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 (2084785301) 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, 33625539 + ... + 33625600.

It is an arithmetic number, because the mean of its divisors is an integer number (538009120).

Almost surely, 2^2084785309 is an apocalyptic number.

It is an amenable number.

2084785309 is a deficient number, since it is larger than the sum of its proper divisors (67251171).

2084785309 is an equidigital number, since it uses as much as digits as its factorization.

2084785309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67251170.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 2084785309 is about 45659.4492848961. The cubic root of 2084785309 is about 1277.4790284585.

The spelling of 2084785309 in words is "two billion, eighty-four million, seven hundred eighty-five thousand, three hundred nine".