2355838909 has 6 divisors (see below), whose sum is σ = 2377963610. Its totient is φ = 2333723616.

The previous prime is 2355838897. The next prime is 2355838913. The reversal of 2355838909 is 9098385532.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1931602500 + 424236409 = 43950^2 + 20597^2 .

It is not a de Polignac number, because 2355838909 - 2⁷ = 2355838781 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 (2355838939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 504417 + ... + 509065.

Almost surely, 2^2355838909 is an apocalyptic number.

It is an amenable number.

2355838909 is a deficient number, since it is larger than the sum of its proper divisors (22124701).

2355838909 is an frugal number, since it uses more digits than its factorization.

2355838909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9407 (or 4758 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The square root of 2355838909 is about 48536.9849599251. The cubic root of 2355838909 is about 1330.6030975016.

The spelling of 2355838909 in words is "two billion, three hundred fifty-five million, eight hundred thirty-eight thousand, nine hundred nine".