1968694861694 has 32 divisors (see below), whose sum is σ = 3235820037120. Its totient is φ = 890892525600.

The previous prime is 1968694861669. The next prime is 1968694861697. The reversal of 1968694861694 is 4961684968691.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968694861697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4251524 + ... + 4691784.

It is an arithmetic number, because the mean of its divisors is an integer number (101119376160).

Almost surely, 2^{1968694861694} is an apocalyptic number.

1968694861694 is a deficient number, since it is larger than the sum of its proper divisors (1267125175426).

1968694861694 is a wasteful number, since it uses less digits than its factorization.

1968694861694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441176.

The product of its digits is 967458816, while the sum is 77.

The spelling of 1968694861694 in words is "one trillion, nine hundred sixty-eight billion, six hundred ninety-four million, eight hundred sixty-one thousand, six hundred ninety-four".