4638188866 has 8 divisors (see below), whose sum is σ = 6957772560. Its totient is φ = 2318931348.

The previous prime is 4638188861. The next prime is 4638188873. The reversal of 4638188866 is 6688818364.

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

It is a self number, because there is not a number n which added to its sum of digits gives 4638188866.

It is not an unprimeable number, because it can be changed into a prime (4638188861) by changing a digit.

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, 42196 + ... + 105151.

It is an arithmetic number, because the mean of its divisors is an integer number (869721570).

Almost surely, 2^4638188866 is an apocalyptic number.

4638188866 is a deficient number, since it is larger than the sum of its proper divisors (2319583694).

4638188866 is a wasteful number, since it uses less digits than its factorization.

4638188866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163088.

The product of its digits is 10616832, while the sum is 58.

The square root of 4638188866 is about 68104.2499848578. The cubic root of 4638188866 is about 1667.6931427095.

The spelling of 4638188866 in words is "four billion, six hundred thirty-eight million, one hundred eighty-eight thousand, eight hundred sixty-six".