194400853443 has 36 divisors (see below), whose sum is σ = 293721239560. Its totient is φ = 127075852800.

The previous prime is 194400853399. The next prime is 194400853447. The reversal of 194400853443 is 344358004491.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

194400853443 is a `hidden beast` number, since 1 + 94 + 40 + 0 + 85 + 3 + 443 = 666.

194400853443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 194400853443 - 2⁶ = 194400853379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194400853447) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 121423843 + ... + 121425443.

Almost surely, 2^194400853443 is an apocalyptic number.

194400853443 is a deficient number, since it is larger than the sum of its proper divisors (99320386117).

194400853443 is an frugal number, since it uses more digits than its factorization.

194400853443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317 (or 1657 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 194400853443 in words is "one hundred ninety-four billion, four hundred million, eight hundred fifty-three thousand, four hundred forty-three".