5218311378 has 32 divisors (see below), whose sum is σ = 12018631680. Its totient is φ = 1479563280.

The previous prime is 5218311377. The next prime is 5218311379. The reversal of 5218311378 is 8731138125.

It is an interprime number because it is at equal distance from previous prime (5218311377) and next prime (5218311379).

It is not an unprimeable number, because it can be changed into a prime (5218311377) 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, 468718 + ... + 479721.

It is an arithmetic number, because the mean of its divisors is an integer number (375582240).

Almost surely, 2^5218311378 is an apocalyptic number.

5218311378 is an abundant number, since it is smaller than the sum of its proper divisors (6800320302).

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

5218311378 is a wasteful number, since it uses less digits than its factorization.

5218311378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948582.

The product of its digits is 40320, while the sum is 39.

The square root of 5218311378 is about 72237.8804921628. The cubic root of 5218311378 is about 1734.5094221028.

The spelling of 5218311378 in words is "five billion, two hundred eighteen million, three hundred eleven thousand, three hundred seventy-eight".