6209426891 has 2 divisors, whose sum is σ = 6209426892. Its totient is φ = 6209426890.

The previous prime is 6209426869. The next prime is 6209426897. The reversal of 6209426891 is 1986249026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6209426891 - 2¹⁰ = 6209425867 is a prime.

It is not a weakly prime, because it can be changed into another prime (6209426897) 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, 3104713445 + 3104713446.

It is an arithmetic number, because the mean of its divisors is an integer number (3104713446).

Almost surely, 2^6209426891 is an apocalyptic number.

6209426891 is a deficient number, since it is larger than the sum of its proper divisors (1).

6209426891 is an equidigital number, since it uses as much as digits as its factorization.

6209426891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 6209426891 is about 78799.9168210221. The cubic root of 6209426891 is about 1838.0211566060.

The spelling of 6209426891 in words is "six billion, two hundred nine million, four hundred twenty-six thousand, eight hundred ninety-one".