6815854429 has 2 divisors, whose sum is σ = 6815854430. Its totient is φ = 6815854428.

The previous prime is 6815854393. The next prime is 6815854447. The reversal of 6815854429 is 9244585186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6548531929 + 267322500 = 80923^2 + 16350^2 .

It is a cyclic number.

It is not a de Polignac number, because 6815854429 - 2⁷ = 6815854301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6815857429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3407927214 + 3407927215.

It is an arithmetic number, because the mean of its divisors is an integer number (3407927215).

Almost surely, 2^6815854429 is an apocalyptic number.

It is an amenable number.

6815854429 is a deficient number, since it is larger than the sum of its proper divisors (1).

6815854429 is an equidigital number, since it uses as much as digits as its factorization.

6815854429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2764800, while the sum is 52.

The square root of 6815854429 is about 82558.1881402445. The cubic root of 6815854429 is about 1896.0077234051.

The spelling of 6815854429 in words is "six billion, eight hundred fifteen million, eight hundred fifty-four thousand, four hundred twenty-nine".