4866591638 has 8 divisors (see below), whose sum is σ = 7684092120. Its totient is φ = 2305227600.

The previous prime is 4866591623. The next prime is 4866591659. The reversal of 4866591638 is 8361956684.

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 a congruent 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, 64034063 + ... + 64034138.

It is an arithmetic number, because the mean of its divisors is an integer number (960511515).

Almost surely, 2^4866591638 is an apocalyptic number.

4866591638 is a deficient number, since it is larger than the sum of its proper divisors (2817500482).

4866591638 is a wasteful number, since it uses less digits than its factorization.

4866591638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128068222.

The product of its digits is 7464960, while the sum is 56.

The square root of 4866591638 is about 69760.9607015270. The cubic root of 4866591638 is about 1694.6303046510.

The spelling of 4866591638 in words is "four billion, eight hundred sixty-six million, five hundred ninety-one thousand, six hundred thirty-eight".