4874138721 has 24 divisors (see below), whose sum is σ = 7350057000. Its totient is φ = 3108575232.

The previous prime is 4874138719. The next prime is 4874138749. The reversal of 4874138721 is 1278314784.

It can be written as a sum of positive squares in 4 ways, for example, as 1215219600 + 3658919121 = 34860^2 + 60489^2 .

It is not a de Polignac number, because 4874138721 - 2¹ = 4874138719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4874138701) 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 23 ways as a sum of consecutive naturals, for example, 57216 + ... + 114113.

It is an arithmetic number, because the mean of its divisors is an integer number (306252375).

Almost surely, 2^4874138721 is an apocalyptic number.

It is an amenable number.

4874138721 is a deficient number, since it is larger than the sum of its proper divisors (2475918279).

4874138721 is a wasteful number, since it uses less digits than its factorization.

4874138721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171473 (or 171470 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 4874138721 is about 69815.0321993767. The cubic root of 4874138721 is about 1695.5058599268.

The spelling of 4874138721 in words is "four billion, eight hundred seventy-four million, one hundred thirty-eight thousand, seven hundred twenty-one".