4634727821 has 2 divisors, whose sum is σ = 4634727822. Its totient is φ = 4634727820.

The previous prime is 4634727793. The next prime is 4634727827. The reversal of 4634727821 is 1287274364.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3059749225 + 1574978596 = 55315^2 + 39686^2 .

It is a cyclic number.

It is not a de Polignac number, because 4634727821 - 2²² = 4630533517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4634727827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2317363910 + 2317363911.

It is an arithmetic number, because the mean of its divisors is an integer number (2317363911).

Almost surely, 2^4634727821 is an apocalyptic number.

It is an amenable number.

4634727821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4634727821 is an equidigital number, since it uses as much as digits as its factorization.

4634727821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 44.

The square root of 4634727821 is about 68078.8353381578. The cubic root of 4634727821 is about 1667.2782252014.

The spelling of 4634727821 in words is "four billion, six hundred thirty-four million, seven hundred twenty-seven thousand, eight hundred twenty-one".