194885141593 has 8 divisors (see below), whose sum is σ = 200226733128. Its totient is φ = 189547467264.

The previous prime is 194885141573. The next prime is 194885141629. The reversal of 194885141593 is 395141588491.

It can be written as a sum of positive squares in 4 ways, for example, as 61428631104 + 133456510489 = 247848^2 + 365317^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 194885141593 - 2⁹ = 194885141081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194885141533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 878296 + ... + 1077577.

It is an arithmetic number, because the mean of its divisors is an integer number (25028341641).

Almost surely, 2^194885141593 is an apocalyptic number.

It is an amenable number.

194885141593 is a deficient number, since it is larger than the sum of its proper divisors (5341591535).

194885141593 is a wasteful number, since it uses less digits than its factorization.

194885141593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958603.

The product of its digits is 6220800, while the sum is 58.

The spelling of 194885141593 in words is "one hundred ninety-four billion, eight hundred eighty-five million, one hundred forty-one thousand, five hundred ninety-three".