3965938395694 has 16 divisors (see below), whose sum is σ = 6489782562816. Its totient is φ = 1802681163000.

The previous prime is 3965938395631. The next prime is 3965938395697. The reversal of 3965938395694 is 4965938395693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965938395697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1473469 + ... + 3178519.

It is an arithmetic number, because the mean of its divisors is an integer number (405611410176).

Almost surely, 2^{3965938395694} is an apocalyptic number.

3965938395694 is a deficient number, since it is larger than the sum of its proper divisors (2523844167122).

3965938395694 is a wasteful number, since it uses less digits than its factorization.

3965938395694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810791.

The product of its digits is 5101833600, while the sum is 79.

Subtracting 3965938395694 from its reverse (4965938395693), we obtain a palindrome (999999999999).

The spelling of 3965938395694 in words is "three trillion, nine hundred sixty-five billion, nine hundred thirty-eight million, three hundred ninety-five thousand, six hundred ninety-four".