3944324329081 has 2 divisors, whose sum is σ = 3944324329082. Its totient is φ = 3944324329080.

The previous prime is 3944324329063. The next prime is 3944324329091. The reversal of 3944324329081 is 1809234234493.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2610567275625 + 1333757053456 = 1615725^2 + 1154884^2 .

It is a cyclic number.

It is not a de Polignac number, because 3944324329081 - 2⁹ = 3944324328569 is a prime.

It is a super-2 number, since 2×3944324329081² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3944324329091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1972162164540 + 1972162164541.

It is an arithmetic number, because the mean of its divisors is an integer number (1972162164541).

Almost surely, 2^{3944324329081} is an apocalyptic number.

It is an amenable number.

3944324329081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3944324329081 is an equidigital number, since it uses as much as digits as its factorization.

3944324329081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4478976, while the sum is 52.

The spelling of 3944324329081 in words is "three trillion, nine hundred forty-four billion, three hundred twenty-four million, three hundred twenty-nine thousand, eighty-one".