4540789609 has 8 divisors (see below), whose sum is σ = 4562517960. Its totient is φ = 4519113600.

The previous prime is 4540789597. The next prime is 4540789621. The reversal of 4540789609 is 9069870454.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4540789597) and next prime (4540789621).

It can be written as a sum of positive squares in 4 ways, for example, as 466776025 + 4074013584 = 21605^2 + 63828^2 .

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 4540789609 - 2¹⁵ = 4540756841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4540789699) 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, 166669 + ... + 191989.

It is an arithmetic number, because the mean of its divisors is an integer number (570314745).

Almost surely, 2^4540789609 is an apocalyptic number.

It is an amenable number.

4540789609 is a deficient number, since it is larger than the sum of its proper divisors (21728351).

4540789609 is a wasteful number, since it uses less digits than its factorization.

4540789609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26171.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 4540789609 is about 67385.3812707178. The cubic root of 4540789609 is about 1655.9369361550.

The spelling of 4540789609 in words is "four billion, five hundred forty million, seven hundred eighty-nine thousand, six hundred nine".