6938624138 has 8 divisors (see below), whose sum is σ = 10408429632. Its totient is φ = 3469147596.

The previous prime is 6938624113. The next prime is 6938624159. The reversal of 6938624138 is 8314268396.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20120 + ... + 119507.

It is an arithmetic number, because the mean of its divisors is an integer number (1301053704).

Almost surely, 2^6938624138 is an apocalyptic number.

6938624138 is a deficient number, since it is larger than the sum of its proper divisors (3469805494).

6938624138 is a wasteful number, since it uses less digits than its factorization.

6938624138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164476.

The product of its digits is 1492992, while the sum is 50.

The square root of 6938624138 is about 83298.4041743898. The cubic root of 6938624138 is about 1907.3239149295.

The spelling of 6938624138 in words is "six billion, nine hundred thirty-eight million, six hundred twenty-four thousand, one hundred thirty-eight".