4989678820 has 36 divisors (see below), whose sum is σ = 12189074940. Its totient is φ = 1710746688.

The previous prime is 4989678817. The next prime is 4989678833. The reversal of 4989678820 is 288769894.

It can be written as a sum of positive squares in 2 ways, for example, as 731594304 + 4258084516 = 27048^2 + 65254^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2544775 + ... + 2546734.

It is an arithmetic number, because the mean of its divisors is an integer number (338585415).

Almost surely, 2^4989678820 is an apocalyptic number.

It is an amenable number.

4989678820 is an abundant number, since it is smaller than the sum of its proper divisors (7199396120).

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

4989678820 is a wasteful number, since it uses less digits than its factorization.

4989678820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5091532 (or 5091523 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 61.

The square root of 4989678820 is about 70637.6586531575. The cubic root of 4989678820 is about 1708.7985381856.

The spelling of 4989678820 in words is "four billion, nine hundred eighty-nine million, six hundred seventy-eight thousand, eight hundred twenty".