4630821780 has 96 divisors (see below), whose sum is σ = 13975565184. Its totient is φ = 1138927104.

The previous prime is 4630821779. The next prime is 4630821847. The reversal of 4630821780 is 871280364.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1462479 + ... + 1465641.

It is an arithmetic number, because the mean of its divisors is an integer number (145578804).

Almost surely, 2^4630821780 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 4630821780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6987782592).

4630821780 is an abundant number, since it is smaller than the sum of its proper divisors (9344743404).

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

4630821780 is a wasteful number, since it uses less digits than its factorization.

4630821780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5065 (or 5063 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 4630821780 is about 68050.1416603963. The cubic root of 4630821780 is about 1666.8097124335.

The spelling of 4630821780 in words is "four billion, six hundred thirty million, eight hundred twenty-one thousand, seven hundred eighty".