194638653856 has 24 divisors (see below), whose sum is σ = 383205906720. Its totient is φ = 97316518848.

The previous prime is 194638653763. The next prime is 194638653857. The reversal of 194638653856 is 658356836491.

It is not an unprimeable number, because it can be changed into a prime (194638653857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1456875 + ... + 1584853.

It is an arithmetic number, because the mean of its divisors is an integer number (15966912780).

Almost surely, 2^194638653856 is an apocalyptic number.

194638653856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

194638653856 is a deficient number, since it is larger than the sum of its proper divisors (188567252864).

194638653856 is a wasteful number, since it uses less digits than its factorization.

194638653856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175516 (or 175508 counting only the distinct ones).

The product of its digits is 111974400, while the sum is 64.

The spelling of 194638653856 in words is "one hundred ninety-four billion, six hundred thirty-eight million, six hundred fifty-three thousand, eight hundred fifty-six".