6813942005 has 16 divisors (see below), whose sum is σ = 8811546240. Its totient is φ = 5028499008.

The previous prime is 6813941971. The next prime is 6813942043. The reversal of 6813942005 is 5002493186.

It is a happy number.

It is not a de Polignac number, because 6813942005 - 2²⁴ = 6797164789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6813942005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66326 + ... + 134264.

It is an arithmetic number, because the mean of its divisors is an integer number (550721640).

Almost surely, 2^6813942005 is an apocalyptic number.

6813942005 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6813942005 is a deficient number, since it is larger than the sum of its proper divisors (1997604235).

6813942005 is a wasteful number, since it uses less digits than its factorization.

6813942005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69500.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 6813942005 is about 82546.6050482998. The cubic root of 6813942005 is about 1895.8303766080.

The spelling of 6813942005 in words is "six billion, eight hundred thirteen million, nine hundred forty-two thousand, five".