194968691916 has 24 divisors (see below), whose sum is σ = 455439855360. Its totient is φ = 64916291472.

The previous prime is 194968691891. The next prime is 194968691921. The reversal of 194968691916 is 619196869491.

It is a super-4 number, since 4×194968691916⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9147976 + ... + 9169263.

It is an arithmetic number, because the mean of its divisors is an integer number (18976660640).

Almost surely, 2^194968691916 is an apocalyptic number.

It is an amenable number.

194968691916 is an abundant number, since it is smaller than the sum of its proper divisors (260471163444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194968691916 is a wasteful number, since it uses less digits than its factorization.

194968691916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18318133 (or 18318131 counting only the distinct ones).

The product of its digits is 45349632, while the sum is 69.

The spelling of 194968691916 in words is "one hundred ninety-four billion, nine hundred sixty-eight million, six hundred ninety-one thousand, nine hundred sixteen".