3946418329729 has 2 divisors, whose sum is σ = 3946418329730. Its totient is φ = 3946418329728.

The previous prime is 3946418329699. The next prime is 3946418329741. The reversal of 3946418329729 is 9279238146493.

3946418329729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2827953449104 + 1118464880625 = 1681652^2 + 1057575^2 .

It is a cyclic number.

It is not a de Polignac number, because 3946418329729 - 2²³ = 3946409941121 is a prime.

It is not a weakly prime, because it can be changed into another prime (3946418329129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1973209164864 + 1973209164865.

It is an arithmetic number, because the mean of its divisors is an integer number (1973209164865).

Almost surely, 2^{3946418329729} is an apocalyptic number.

It is an amenable number.

3946418329729 is a deficient number, since it is larger than the sum of its proper divisors (1).

3946418329729 is an equidigital number, since it uses as much as digits as its factorization.

3946418329729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141087744, while the sum is 67.

The spelling of 3946418329729 in words is "three trillion, nine hundred forty-six billion, four hundred eighteen million, three hundred twenty-nine thousand, seven hundred twenty-nine".