194793623545 has 8 divisors (see below), whose sum is σ = 233901149760. Its totient is φ = 155735697840.

The previous prime is 194793623543. The next prime is 194793623603. The reversal of 194793623545 is 545326397491.

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

It is not a de Polignac number, because 194793623545 - 2¹ = 194793623543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 194793623545.

It is not an unprimeable number, because it can be changed into a prime (194793623543) 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, 12391485 + ... + 12407194.

It is an arithmetic number, because the mean of its divisors is an integer number (29237643720).

Almost surely, 2^194793623545 is an apocalyptic number.

It is an amenable number.

194793623545 is a deficient number, since it is larger than the sum of its proper divisors (39107526215).

194793623545 is a wasteful number, since it uses less digits than its factorization.

194793623545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24800255.

The product of its digits is 24494400, while the sum is 58.

The spelling of 194793623545 in words is "one hundred ninety-four billion, seven hundred ninety-three million, six hundred twenty-three thousand, five hundred forty-five".