4728165121 has 8 divisors (see below), whose sum is σ = 4741566984. Its totient is φ = 4714782720.

The previous prime is 4728165119. The next prime is 4728165151. The reversal of 4728165121 is 1215618274.

It can be written as a sum of positive squares in 4 ways, for example, as 1727316721 + 3000848400 = 41561^2 + 54780^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4728165121 - 2¹ = 4728165119 is a prime.

It is a super-2 number, since 2×4728165121² = 44711090822881889282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4728165151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575281 + ... + 583441.

It is an arithmetic number, because the mean of its divisors is an integer number (592695873).

Almost surely, 2^4728165121 is an apocalyptic number.

It is an amenable number.

4728165121 is a deficient number, since it is larger than the sum of its proper divisors (13401863).

4728165121 is an equidigital number, since it uses as much as digits as its factorization.

4728165121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9731.

The product of its digits is 26880, while the sum is 37.

The square root of 4728165121 is about 68761.6544376297. The cubic root of 4728165121 is about 1678.4080158246.

The spelling of 4728165121 in words is "four billion, seven hundred twenty-eight million, one hundred sixty-five thousand, one hundred twenty-one".