6805218933 has 6 divisors (see below), whose sum is σ = 9829760694. Its totient is φ = 4536812616.

The previous prime is 6805218913. The next prime is 6805218989. The reversal of 6805218933 is 3398125086.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6168060369 + 637158564 = 78537^2 + 25242^2 .

It is not a de Polignac number, because 6805218933 - 2⁹ = 6805218421 is a prime.

It is a super-2 number, since 2×6805218933² = 92622009452123316978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6805218913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 378067710 + ... + 378067727.

It is an arithmetic number, because the mean of its divisors is an integer number (1638293449).

Almost surely, 2^6805218933 is an apocalyptic number.

It is an amenable number.

6805218933 is a deficient number, since it is larger than the sum of its proper divisors (3024541761).

6805218933 is a wasteful number, since it uses less digits than its factorization.

6805218933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756135443 (or 756135440 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 6805218933 is about 82493.7508724146. The cubic root of 6805218933 is about 1895.0210297882.

The spelling of 6805218933 in words is "six billion, eight hundred five million, two hundred eighteen thousand, nine hundred thirty-three".