6938812805 has 16 divisors (see below), whose sum is σ = 8508533760. Its totient is φ = 5429878272.

The previous prime is 6938812781. The next prime is 6938812807. The reversal of 6938812805 is 5082188396.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6938812805 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6938812807) 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 in 15 ways as a sum of consecutive naturals, for example, 466676 + ... + 481314.

It is an arithmetic number, because the mean of its divisors is an integer number (531783360).

Almost surely, 2^6938812805 is an apocalyptic number.

It is an amenable number.

6938812805 is a deficient number, since it is larger than the sum of its proper divisors (1569720955).

6938812805 is a wasteful number, since it uses less digits than its factorization.

6938812805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16708.

The product of its (nonzero) digits is 829440, while the sum is 50.

The square root of 6938812805 is about 83299.5366433692. The cubic root of 6938812805 is about 1907.3412020176.

The spelling of 6938812805 in words is "six billion, nine hundred thirty-eight million, eight hundred twelve thousand, eight hundred five".