8325638639 has 2 divisors, whose sum is σ = 8325638640. Its totient is φ = 8325638638.

The previous prime is 8325638627. The next prime is 8325638641. The reversal of 8325638639 is 9368365238.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8325638639 - 2⁸ = 8325638383 is a prime.

It is a super-3 number, since 3×8325638639³ (a number of 31 digits) contains 333 as substring.

Together with 8325638641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8325632639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4162819319 + 4162819320.

It is an arithmetic number, because the mean of its divisors is an integer number (4162819320).

Almost surely, 2^8325638639 is an apocalyptic number.

8325638639 is a deficient number, since it is larger than the sum of its proper divisors (1).

8325638639 is an equidigital number, since it uses as much as digits as its factorization.

8325638639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 53.

The square root of 8325638639 is about 91244.9376075188. The cubic root of 8325638639 is about 2026.7764638938.

The spelling of 8325638639 in words is "eight billion, three hundred twenty-five million, six hundred thirty-eight thousand, six hundred thirty-nine".