4516243209 has 63 divisors (see below), whose sum is σ = 7201375869. Its totient is φ = 2830590360.

The previous prime is 4516243201. The next prime is 4516243229. The reversal of 4516243209 is 9023426154.

It is a happy number.

The square root of 4516243209 is 67203.

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

4516243209 is a `hidden beast` number, since 4 + 5 + 1 + 624 + 3 + 20 + 9 = 666.

It is not a de Polignac number, because 4516243209 - 2³ = 4516243201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4516243201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 34475074 + ... + 34475204.

Almost surely, 2^4516243209 is an apocalyptic number.

4516243209 is the 67203-rd square number.

4516243209 is the 33602-nd centered octagonal number.

It is an amenable number.

4516243209 is a deficient number, since it is larger than the sum of its proper divisors (2685132660).

4516243209 is an frugal number, since it uses more digits than its factorization.

4516243209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The cubic root of 4516243209 is about 1652.9476796757.

Multiplying 4516243209 by its sum of digits (36), we get a square (162584755524 = 403218²).

The spelling of 4516243209 in words is "four billion, five hundred sixteen million, two hundred forty-three thousand, two hundred nine".