4644863998 has 8 divisors (see below), whose sum is σ = 7377136992. Its totient is φ = 2185818336.

The previous prime is 4644863957. The next prime is 4644864017. The reversal of 4644863998 is 8993684464.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68306790 + ... + 68306857.

It is an arithmetic number, because the mean of its divisors is an integer number (922142124).

Almost surely, 2^4644863998 is an apocalyptic number.

4644863998 is a deficient number, since it is larger than the sum of its proper divisors (2732272994).

4644863998 is a wasteful number, since it uses less digits than its factorization.

4644863998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136613666.

The product of its digits is 35831808, while the sum is 61.

The square root of 4644863998 is about 68153.2390866348. The cubic root of 4644863998 is about 1668.4927893060.

The spelling of 4644863998 in words is "four billion, six hundred forty-four million, eight hundred sixty-three thousand, nine hundred ninety-eight".