4626530021 has 2 divisors, whose sum is σ = 4626530022. Its totient is φ = 4626530020.

The previous prime is 4626529981. The next prime is 4626530033. The reversal of 4626530021 is 1200356264.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3318912100 + 1307617921 = 57610^2 + 36161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4626530021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4626430021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2313265010 + 2313265011.

It is an arithmetic number, because the mean of its divisors is an integer number (2313265011).

Almost surely, 2^4626530021 is an apocalyptic number.

It is an amenable number.

4626530021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4626530021 is an equidigital number, since it uses as much as digits as its factorization.

4626530021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 4626530021 is about 68018.6005516138. The cubic root of 4626530021 is about 1666.2946305908.

Adding to 4626530021 its reverse (1200356264), we get a palindrome (5826886285).

The spelling of 4626530021 in words is "four billion, six hundred twenty-six million, five hundred thirty thousand, twenty-one".