4878749681 has 8 divisors (see below), whose sum is σ = 5530566720. Its totient is φ = 4266436752.

The previous prime is 4878749647. The next prime is 4878749699. The reversal of 4878749681 is 1869478784.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4878749681 - 2¹⁰ = 4878748657 is a prime.

It is a super-2 number, since 2×4878749681² = 47604396899715203522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4878749081) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9875765 + ... + 9876258.

It is an arithmetic number, because the mean of its divisors is an integer number (691320840).

Almost surely, 2^4878749681 is an apocalyptic number.

It is an amenable number.

4878749681 is a deficient number, since it is larger than the sum of its proper divisors (651817039).

4878749681 is a wasteful number, since it uses less digits than its factorization.

4878749681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19752055.

The product of its digits is 21676032, while the sum is 62.

The square root of 4878749681 is about 69848.0470807882. The cubic root of 4878749681 is about 1696.0403438073.

The spelling of 4878749681 in words is "four billion, eight hundred seventy-eight million, seven hundred forty-nine thousand, six hundred eighty-one".