4512709820 has 48 divisors (see below), whose sum is σ = 9730717920. Its totient is φ = 1756989696.

The previous prime is 4512709783. The next prime is 4512709829. The reversal of 4512709820 is 289072154.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4512709829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243026 + ... + 260934.

It is an arithmetic number, because the mean of its divisors is an integer number (202723290).

Almost surely, 2^4512709820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4512709820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4865358960).

4512709820 is an abundant number, since it is smaller than the sum of its proper divisors (5218008100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4512709820 is a wasteful number, since it uses less digits than its factorization.

4512709820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18254 (or 18252 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 4512709820 is about 67176.7059329348. The cubic root of 4512709820 is about 1652.5164930535.

The spelling of 4512709820 in words is "four billion, five hundred twelve million, seven hundred nine thousand, eight hundred twenty".