194400882645 has 16 divisors (see below), whose sum is σ = 311295768192. Its totient is φ = 103595685440.

The previous prime is 194400882623. The next prime is 194400882649. The reversal of 194400882645 is 546288004491.

194400882645 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 194400882645 - 2¹⁰ = 194400881621 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194400882649) 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 15 ways as a sum of consecutive naturals, for example, 5280126 + ... + 5316815.

It is an arithmetic number, because the mean of its divisors is an integer number (19455985512).

Almost surely, 2^194400882645 is an apocalyptic number.

194400882645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194400882645 is a deficient number, since it is larger than the sum of its proper divisors (116894885547).

194400882645 is a wasteful number, since it uses less digits than its factorization.

194400882645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10598172.

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 194400882645 in words is "one hundred ninety-four billion, four hundred million, eight hundred eighty-two thousand, six hundred forty-five".