5138173856 has 48 divisors (see below), whose sum is σ = 10343458944. Its totient is φ = 2511396864.

The previous prime is 5138173853. The next prime is 5138173877. The reversal of 5138173856 is 6583718315.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 5138173856.

It is not an unprimeable number, because it can be changed into a prime (5138173853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732631 + ... + 1735593.

It is an arithmetic number, because the mean of its divisors is an integer number (215488728).

Almost surely, 2^5138173856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5138173856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5171729472).

5138173856 is an abundant number, since it is smaller than the sum of its proper divisors (5205285088).

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

5138173856 is a wasteful number, since it uses less digits than its factorization.

5138173856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173 (or 4165 counting only the distinct ones).

The product of its digits is 604800, while the sum is 47.

The square root of 5138173856 is about 71681.0564654289. The cubic root of 5138173856 is about 1725.5846348242.

The spelling of 5138173856 in words is "five billion, one hundred thirty-eight million, one hundred seventy-three thousand, eight hundred fifty-six".