4618438646 has 8 divisors (see below), whose sum is σ = 6992402760. Its totient is φ = 2287637728.

The previous prime is 4618438633. The next prime is 4618438651. The reversal of 4618438646 is 6468348164.

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

It is a junction number, because it is equal to n+sod(n) for n = 4618438594 and 4618438603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10790531 + ... + 10790958.

It is an arithmetic number, because the mean of its divisors is an integer number (874050345).

Almost surely, 2^4618438646 is an apocalyptic number.

4618438646 is a deficient number, since it is larger than the sum of its proper divisors (2373964114).

4618438646 is a wasteful number, since it uses less digits than its factorization.

4618438646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21581598.

The product of its digits is 2654208, while the sum is 50.

The square root of 4618438646 is about 67959.0953883290. The cubic root of 4618438646 is about 1665.3226651183.

The spelling of 4618438646 in words is "four billion, six hundred eighteen million, four hundred thirty-eight thousand, six hundred forty-six".