2228756509 has 8 divisors (see below), whose sum is σ = 2547610560. Its totient is φ = 1910017536.

The previous prime is 2228756507. The next prime is 2228756533. The reversal of 2228756509 is 9056578222.

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

It is not a de Polignac number, because 2228756509 - 2¹ = 2228756507 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 (2228756507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17757 + ... + 69085.

It is an arithmetic number, because the mean of its divisors is an integer number (318451320).

Almost surely, 2^2228756509 is an apocalyptic number.

It is an amenable number.

2228756509 is a deficient number, since it is larger than the sum of its proper divisors (318854051).

2228756509 is an equidigital number, since it uses as much as digits as its factorization.

2228756509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57539.

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 2228756509 is about 47209.7077834633. The cubic root of 2228756509 is about 1306.2336721813.

The spelling of 2228756509 in words is "two billion, two hundred twenty-eight million, seven hundred fifty-six thousand, five hundred nine".