194638653874 has 48 divisors (see below), whose sum is σ = 351253414656. Its totient is φ = 80570700000.

The previous prime is 194638653857. The next prime is 194638653919. The reversal of 194638653874 is 478356836491.

194638653874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1527624 + ... + 1650124.

It is an arithmetic number, because the mean of its divisors is an integer number (7317779472).

Almost surely, 2^194638653874 is an apocalyptic number.

194638653874 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

194638653874 is a deficient number, since it is larger than the sum of its proper divisors (156614760782).

194638653874 is a wasteful number, since it uses less digits than its factorization.

194638653874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123071 (or 123064 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 64.

The spelling of 194638653874 in words is "one hundred ninety-four billion, six hundred thirty-eight million, six hundred fifty-three thousand, eight hundred seventy-four".