4782897821 has 16 divisors (see below), whose sum is σ = 5241747840. Its totient is φ = 4337219520.

The previous prime is 4782897781. The next prime is 4782897857. The reversal of 4782897821 is 1287982874.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4782897821 is a prime.

It is a super-2 number, since 2×4782897821² = 45752223132253096082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4782897871) 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 15 ways as a sum of consecutive naturals, for example, 725486 + ... + 732048.

It is an arithmetic number, because the mean of its divisors is an integer number (327609240).

Almost surely, 2^4782897821 is an apocalyptic number.

It is an amenable number.

4782897821 is a deficient number, since it is larger than the sum of its proper divisors (458850019).

4782897821 is a wasteful number, since it uses less digits than its factorization.

4782897821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7556.

The product of its digits is 3612672, while the sum is 56.

The square root of 4782897821 is about 69158.4978220320. The cubic root of 4782897821 is about 1684.8595386970.

The spelling of 4782897821 in words is "four billion, seven hundred eighty-two million, eight hundred ninety-seven thousand, eight hundred twenty-one".