8433238643 has 2 divisors, whose sum is σ = 8433238644. Its totient is φ = 8433238642.

The previous prime is 8433238553. The next prime is 8433238661. The reversal of 8433238643 is 3468323348.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8433238643 - 2¹² = 8433234547 is a prime.

It is a super-2 number, since 2×8433238643² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8433238594 and 8433238603.

It is not a weakly prime, because it can be changed into another prime (8433208643) 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 as a sum of consecutive naturals, namely, 4216619321 + 4216619322.

It is an arithmetic number, because the mean of its divisors is an integer number (4216619322).

Almost surely, 2^8433238643 is an apocalyptic number.

8433238643 is a deficient number, since it is larger than the sum of its proper divisors (1).

8433238643 is an equidigital number, since it uses as much as digits as its factorization.

8433238643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 44.

The square root of 8433238643 is about 91832.6665353892. Note that the first 3 decimals coincide. The cubic root of 8433238643 is about 2035.4704257683.

The spelling of 8433238643 in words is "eight billion, four hundred thirty-three million, two hundred thirty-eight thousand, six hundred forty-three".