5178818268 has 120 divisors (see below), whose sum is σ = 14780475248. Its totient is φ = 1571560704.

The previous prime is 5178818261. The next prime is 5178818269. The reversal of 5178818268 is 8628188715.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5178818261) 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, 299055 + ... + 315897.

Almost surely, 2^5178818268 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 5178818268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7390237624).

5178818268 is an abundant number, since it is smaller than the sum of its proper divisors (9601656980).

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

5178818268 is a wasteful number, since it uses less digits than its factorization.

5178818268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16945 (or 16934 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 54.

The square root of 5178818268 is about 71964.0067533764. The cubic root of 5178818268 is about 1730.1226446960.

The spelling of 5178818268 in words is "five billion, one hundred seventy-eight million, eight hundred eighteen thousand, two hundred sixty-eight".