4889186985 has 32 divisors (see below), whose sum is σ = 8016744960. Its totient is φ = 2543268608.

The previous prime is 4889186971. The next prime is 4889186987. The reversal of 4889186985 is 5896819884.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4889186985 - 2⁶ = 4889186921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4889186987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194731 + ... + 218399.

It is an arithmetic number, because the mean of its divisors is an integer number (250523280).

Almost surely, 2^4889186985 is an apocalyptic number.

It is an amenable number.

4889186985 is a deficient number, since it is larger than the sum of its proper divisors (3127557975).

4889186985 is a wasteful number, since it uses less digits than its factorization.

4889186985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24017.

The product of its digits is 39813120, while the sum is 66.

The square root of 4889186985 is about 69922.7215216914. The cubic root of 4889186985 is about 1697.2489512859.

The spelling of 4889186985 in words is "four billion, eight hundred eighty-nine million, one hundred eighty-six thousand, nine hundred eighty-five".