2235685909 has 8 divisors (see below), whose sum is σ = 2278831320. Its totient is φ = 2193357088.

The previous prime is 2235685897. The next prime is 2235685937. The reversal of 2235685909 is 9095865322.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 149206225 + 2086479684 = 12215^2 + 45678^2 .

It is not a de Polignac number, because 2235685909 - 2⁵ = 2235685877 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 (2235665909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141369 + ... + 156385.

It is an arithmetic number, because the mean of its divisors is an integer number (284853915).

Almost surely, 2^2235685909 is an apocalyptic number.

It is an amenable number.

2235685909 is a deficient number, since it is larger than the sum of its proper divisors (43145411).

2235685909 is an frugal number, since it uses more digits than its factorization.

2235685909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15176 (or 15070 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

The square root of 2235685909 is about 47283.0403950507. The cubic root of 2235685909 is about 1307.5860034314.

The spelling of 2235685909 in words is "two billion, two hundred thirty-five million, six hundred eighty-five thousand, nine hundred nine".