4639938678 has 12 divisors (see below), whose sum is σ = 10053200508. Its totient is φ = 1546646220.

The previous prime is 4639938659. The next prime is 4639938683. The reversal of 4639938678 is 8768399364.

4639938678 is a `hidden beast` number, since 463 + 9 + 93 + 86 + 7 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128887168 + ... + 128887203.

It is an arithmetic number, because the mean of its divisors is an integer number (837766709).

Almost surely, 2^4639938678 is an apocalyptic number.

4639938678 is an abundant number, since it is smaller than the sum of its proper divisors (5413261830).

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

4639938678 is a wasteful number, since it uses less digits than its factorization.

4639938678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257774379 (or 257774376 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 63.

The square root of 4639938678 is about 68117.0953432396. The cubic root of 4639938678 is about 1667.9028353766.

The spelling of 4639938678 in words is "four billion, six hundred thirty-nine million, nine hundred thirty-eight thousand, six hundred seventy-eight".