4809957181 has 2 divisors, whose sum is σ = 4809957182. Its totient is φ = 4809957180.

The previous prime is 4809957157. The next prime is 4809957287. The reversal of 4809957181 is 1817599084.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4557465081 + 252492100 = 67509^2 + 15890^2 .

It is a cyclic number.

It is not a de Polignac number, because 4809957181 - 2²⁵ = 4776402749 is a prime.

It is a super-3 number, since 3×4809957181³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4809952181) 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 as a sum of consecutive naturals, namely, 2404978590 + 2404978591.

It is an arithmetic number, because the mean of its divisors is an integer number (2404978591).

Almost surely, 2^4809957181 is an apocalyptic number.

It is an amenable number.

4809957181 is a deficient number, since it is larger than the sum of its proper divisors (1).

4809957181 is an equidigital number, since it uses as much as digits as its factorization.

4809957181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 52.

The square root of 4809957181 is about 69353.8548387903. The cubic root of 4809957181 is about 1688.0309432804.

The spelling of 4809957181 in words is "four billion, eight hundred nine million, nine hundred fifty-seven thousand, one hundred eighty-one".