4816820639 has 2 divisors, whose sum is σ = 4816820640. Its totient is φ = 4816820638.

The previous prime is 4816820633. The next prime is 4816820683. The reversal of 4816820639 is 9360286184.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4816820639 - 2⁸ = 4816820383 is a prime.

It is a super-2 number, since 2×4816820639² = 46403522136592736642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 4816820593 and 4816820602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4816820633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2408410319 + 2408410320.

It is an arithmetic number, because the mean of its divisors is an integer number (2408410320).

Almost surely, 2^4816820639 is an apocalyptic number.

4816820639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4816820639 is an equidigital number, since it uses as much as digits as its factorization.

4816820639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 4816820639 is about 69403.3186454365. The cubic root of 4816820639 is about 1688.8334606936.

The spelling of 4816820639 in words is "four billion, eight hundred sixteen million, eight hundred twenty thousand, six hundred thirty-nine".