5218406138 has 16 divisors (see below), whose sum is σ = 8659483200. Its totient is φ = 2338593600.

The previous prime is 5218406119. The next prime is 5218406143. The reversal of 5218406138 is 8316048125.

It is a super-2 number, since 2×5218406138² = 54463525242232150088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1668863 + ... + 1671986.

It is an arithmetic number, because the mean of its divisors is an integer number (541217700).

Almost surely, 2^5218406138 is an apocalyptic number.

5218406138 is a deficient number, since it is larger than the sum of its proper divisors (3441077062).

5218406138 is a wasteful number, since it uses less digits than its factorization.

5218406138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340933.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 5218406138 is about 72238.5363777534. The cubic root of 5218406138 is about 1734.5199211005.

The spelling of 5218406138 in words is "five billion, two hundred eighteen million, four hundred six thousand, one hundred thirty-eight".