6693872389 has 2 divisors, whose sum is σ = 6693872390. Its totient is φ = 6693872388.

The previous prime is 6693872371. The next prime is 6693872401. The reversal of 6693872389 is 9832783966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6139976164 + 553896225 = 78358^2 + 23535^2 .

It is a cyclic number.

It is not a de Polignac number, because 6693872389 - 2¹³ = 6693864197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6693872089) 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, 3346936194 + 3346936195.

It is an arithmetic number, because the mean of its divisors is an integer number (3346936195).

Almost surely, 2^6693872389 is an apocalyptic number.

It is an amenable number.

6693872389 is a deficient number, since it is larger than the sum of its proper divisors (1).

6693872389 is an equidigital number, since it uses as much as digits as its factorization.

6693872389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23514624, while the sum is 61.

The square root of 6693872389 is about 81816.0888150980. The cubic root of 6693872389 is about 1884.6287395815.

The spelling of 6693872389 in words is "six billion, six hundred ninety-three million, eight hundred seventy-two thousand, three hundred eighty-nine".