4878146538 has 64 divisors (see below), whose sum is σ = 10974412800. Its totient is φ = 1606022640.

The previous prime is 4878146531. The next prime is 4878146627. The reversal of 4878146538 is 8356418784.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (4878146531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2663283 + ... + 2665113.

It is an arithmetic number, because the mean of its divisors is an integer number (171475200).

Almost surely, 2^4878146538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4878146538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5487206400).

4878146538 is an abundant number, since it is smaller than the sum of its proper divisors (6096266262).

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

4878146538 is a wasteful number, since it uses less digits than its factorization.

4878146538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424 (or 2418 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The square root of 4878146538 is about 69843.7294107352. The cubic root of 4878146538 is about 1695.9704490538.

The spelling of 4878146538 in words is "four billion, eight hundred seventy-eight million, one hundred forty-six thousand, five hundred thirty-eight".