4921538730 has 64 divisors (see below), whose sum is σ = 12357370368. Its totient is φ = 1253143040.

The previous prime is 4921538717. The next prime is 4921538759. The reversal of 4921538730 is 378351294.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15244 + ... + 100376.

It is an arithmetic number, because the mean of its divisors is an integer number (193083912).

Almost surely, 2^4921538730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4921538730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6178685184).

4921538730 is an abundant number, since it is smaller than the sum of its proper divisors (7435831638).

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

4921538730 is a wasteful number, since it uses less digits than its factorization.

4921538730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85231.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 4921538730 is about 70153.6793760669. The cubic root of 4921538730 is about 1700.9842892776.

The spelling of 4921538730 in words is "four billion, nine hundred twenty-one million, five hundred thirty-eight thousand, seven hundred thirty".