947836783109 has 2 divisors, whose sum is σ = 947836783110. Its totient is φ = 947836783108.

The previous prime is 947836783097. The next prime is 947836783111. The reversal of 947836783109 is 901387638749.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 855815560609 + 92021222500 = 925103^2 + 303350^2 .

It is a cyclic number.

It is not a de Polignac number, because 947836783109 - 2⁴ = 947836783093 is a prime.

Together with 947836783111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947836783189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473918391554 + 473918391555.

It is an arithmetic number, because the mean of its divisors is an integer number (473918391555).

Almost surely, 2^947836783109 is an apocalyptic number.

It is an amenable number.

947836783109 is a deficient number, since it is larger than the sum of its proper divisors (1).

947836783109 is an equidigital number, since it uses as much as digits as its factorization.

947836783109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54867456, while the sum is 65.

The spelling of 947836783109 in words is "nine hundred forty-seven billion, eight hundred thirty-six million, seven hundred eighty-three thousand, one hundred nine".