194829072971 has 4 divisors (see below), whose sum is σ = 209815924752. Its totient is φ = 179842221192.

The previous prime is 194829072967. The next prime is 194829072989. The reversal of 194829072971 is 179270928491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179270928491 = 224443 ⋅798737.

It is a cyclic number.

It is not a de Polignac number, because 194829072971 - 2² = 194829072967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 194829072971.

It is not an unprimeable number, because it can be changed into a prime (194829072931) 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 in 3 ways as a sum of consecutive naturals, for example, 7493425871 + ... + 7493425896.

It is an arithmetic number, because the mean of its divisors is an integer number (52453981188).

Almost surely, 2^194829072971 is an apocalyptic number.

194829072971 is a deficient number, since it is larger than the sum of its proper divisors (14986851781).

194829072971 is a wasteful number, since it uses less digits than its factorization.

194829072971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14986851780.

The product of its (nonzero) digits is 4572288, while the sum is 59.

The spelling of 194829072971 in words is "one hundred ninety-four billion, eight hundred twenty-nine million, seventy-two thousand, nine hundred seventy-one".