194391438692 has 12 divisors (see below), whose sum is σ = 371110928496. Its totient is φ = 88359744840.

The previous prime is 194391438649. The next prime is 194391438739. The reversal of 194391438692 is 296834193491.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2208993578 + ... + 2208993665.

It is an arithmetic number, because the mean of its divisors is an integer number (30925910708).

Almost surely, 2^194391438692 is an apocalyptic number.

It is an amenable number.

194391438692 is a deficient number, since it is larger than the sum of its proper divisors (176719489804).

194391438692 is a wasteful number, since it uses less digits than its factorization.

194391438692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417987258 (or 4417987256 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 59.

The spelling of 194391438692 in words is "one hundred ninety-four billion, three hundred ninety-one million, four hundred thirty-eight thousand, six hundred ninety-two".