4768918081 has 4 divisors (see below), whose sum is σ = 5049442692. Its totient is φ = 4488393472.

The previous prime is 4768918073. The next prime is 4768918087. The reversal of 4768918081 is 1808198674.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1808198674 = 2 ⋅904099337.

It can be written as a sum of positive squares in 2 ways, for example, as 2804655681 + 1964262400 = 52959^2 + 44320^2 .

It is a cyclic number.

It is not a de Polignac number, because 4768918081 - 2³ = 4768918073 is a prime.

It is a super-2 number, since 2×4768918081² = 45485159326577445122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4768918087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140262280 + ... + 140262313.

It is an arithmetic number, because the mean of its divisors is an integer number (1262360673).

Almost surely, 2^4768918081 is an apocalyptic number.

It is an amenable number.

4768918081 is a deficient number, since it is larger than the sum of its proper divisors (280524611).

4768918081 is a wasteful number, since it uses less digits than its factorization.

4768918081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280524610.

The product of its (nonzero) digits is 774144, while the sum is 52.

The square root of 4768918081 is about 69057.3535620936. The cubic root of 4768918081 is about 1683.2164006696.

The spelling of 4768918081 in words is "four billion, seven hundred sixty-eight million, nine hundred eighteen thousand, eighty-one".