2259551809 has 8 divisors (see below), whose sum is σ = 2402281152. Its totient is φ = 2120529840.

The previous prime is 2259551807. The next prime is 2259551863. The reversal of 2259551809 is 9081559522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2259551809 - 2¹ = 2259551807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2259551807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925587 + ... + 928024.

It is an arithmetic number, because the mean of its divisors is an integer number (300285144).

Almost surely, 2^2259551809 is an apocalyptic number.

It is an amenable number.

2259551809 is a deficient number, since it is larger than the sum of its proper divisors (142729343).

2259551809 is a wasteful number, since it uses less digits than its factorization.

2259551809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853687.

The product of its (nonzero) digits is 324000, while the sum is 46.

The square root of 2259551809 is about 47534.7431780166. The cubic root of 2259551809 is about 1312.2223623660. Note that the first 3 decimals are identical.

The spelling of 2259551809 in words is "two billion, two hundred fifty-nine million, five hundred fifty-one thousand, eight hundred nine".