4808508138 has 80 divisors (see below), whose sum is σ = 12328525440. Its totient is φ = 1372222944.

The previous prime is 4808508137. The next prime is 4808508143. The reversal of 4808508138 is 8318058084.

4808508138 is a `hidden beast` number, since 4 + 8 + 0 + 8 + 508 + 138 = 666.

It is a super-3 number, since 3×4808508138³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4808508093 and 4808508102.

It is not an unprimeable number, because it can be changed into a prime (4808508137) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1203448 + ... + 1207436.

It is an arithmetic number, because the mean of its divisors is an integer number (154106568).

Almost surely, 2^4808508138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4808508138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6164262720).

4808508138 is an abundant number, since it is smaller than the sum of its proper divisors (7520017302).

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

4808508138 is a wasteful number, since it uses less digits than its factorization.

4808508138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5073 (or 5064 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 4808508138 is about 69343.4073146107. The cubic root of 4808508138 is about 1687.8614147378.

The spelling of 4808508138 in words is "four billion, eight hundred eight million, five hundred eight thousand, one hundred thirty-eight".