194853863644 has 48 divisors (see below), whose sum is σ = 373902842880. Its totient is φ = 88116554240.

The previous prime is 194853863641. The next prime is 194853863647. The reversal of 194853863644 is 446368358491.

It is an interprime number because it is at equal distance from previous prime (194853863641) and next prime (194853863647).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194853863641) 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 15 ways as a sum of consecutive naturals, for example, 6866517 + ... + 6894835.

It is an arithmetic number, because the mean of its divisors is an integer number (7789642560).

Almost surely, 2^194853863644 is an apocalyptic number.

It is an amenable number.

194853863644 is a deficient number, since it is larger than the sum of its proper divisors (179048979236).

194853863644 is a wasteful number, since it uses less digits than its factorization.

194853863644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29130 (or 29128 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 61.

The spelling of 194853863644 in words is "one hundred ninety-four billion, eight hundred fifty-three million, eight hundred sixty-three thousand, six hundred forty-four".