4856783621 has 4 divisors (see below), whose sum is σ = 4857026412. Its totient is φ = 4856540832.

The previous prime is 4856783599. The next prime is 4856783627. The reversal of 4856783621 is 1263876584.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4026537025 + 830246596 = 63455^2 + 28814^2 .

It is a cyclic number.

It is not a de Polignac number, because 4856783621 - 2⁶ = 4856783557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4856783621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4856783627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88400 + ... + 132393.

It is an arithmetic number, because the mean of its divisors is an integer number (1214256603).

Almost surely, 2^4856783621 is an apocalyptic number.

It is an amenable number.

4856783621 is a deficient number, since it is larger than the sum of its proper divisors (242791).

4856783621 is a wasteful number, since it uses less digits than its factorization.

4856783621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242790.

The product of its digits is 1935360, while the sum is 50.

The square root of 4856783621 is about 69690.6279280077. The cubic root of 4856783621 is about 1693.4910993352.

The spelling of 4856783621 in words is "four billion, eight hundred fifty-six million, seven hundred eighty-three thousand, six hundred twenty-one".