3546559809 has 45 divisors (see below), whose sum is σ = 5748123513. Its totient is φ = 2178210528.

The previous prime is 3546559789. The next prime is 3546559811. The reversal of 3546559809 is 9089556453.

It is a happy number.

The square root of 3546559809 is 59553.

It is a perfect power (a square), and thus also a powerful number.

3546559809 is a `hidden beast` number, since 3 + 5 + 4 + 6 + 559 + 80 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9641025 + 3536918784 = 3105^2 + 59472^2 .

It is not a de Polignac number, because 3546559809 - 2⁵ = 3546559777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3546559829) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 6967447 + ... + 6967955.

Almost surely, 2^3546559809 is an apocalyptic number.

3546559809 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

3546559809 is the 59553-rd square number.

3546559809 is the 29777-th centered octagonal number.

It is an amenable number.

3546559809 is a deficient number, since it is larger than the sum of its proper divisors (2201563704).

3546559809 is an frugal number, since it uses more digits than its factorization.

3546559809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The cubic root of 3546559809 is about 1524.9973747514.

The spelling of 3546559809 in words is "three billion, five hundred forty-six million, five hundred fifty-nine thousand, eight hundred nine".