5239908181 has 16 divisors (see below), whose sum is σ = 5778054000. Its totient is φ = 4729596928.

The previous prime is 5239908161. The next prime is 5239908187. The reversal of 5239908181 is 1818099325.

It can be written as a sum of positive squares in 8 ways, for example, as 54612100 + 5185296081 = 7390^2 + 72009^2 .

It is not a de Polignac number, because 5239908181 - 2⁷ = 5239908053 is a prime.

It is a super-2 number, since 2×5239908181² = 54913275490621457522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5239908187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37791 + ... + 109123.

It is an arithmetic number, because the mean of its divisors is an integer number (361128375).

Almost surely, 2^5239908181 is an apocalyptic number.

It is an amenable number.

5239908181 is a deficient number, since it is larger than the sum of its proper divisors (538145819).

5239908181 is a wasteful number, since it uses less digits than its factorization.

5239908181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71528.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 5239908181 is about 72387.2100650384. The cubic root of 5239908181 is about 1736.8989753659.

The spelling of 5239908181 in words is "five billion, two hundred thirty-nine million, nine hundred eight thousand, one hundred eighty-one".