194661793 has 8 divisors (see below), whose sum is σ = 196446312. Its totient is φ = 192882816.

The previous prime is 194661791. The next prime is 194661799. The reversal of 194661793 is 397166491.

It is a happy number.

194661793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 54878464 + 139783329 = 7408^2 + 11823^2 .

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 194661793 - 2¹ = 194661791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194661791) 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, 102771 + ... + 104647.

It is an arithmetic number, because the mean of its divisors is an integer number (24555789).

Almost surely, 2^194661793 is an apocalyptic number.

It is an amenable number.

194661793 is a deficient number, since it is larger than the sum of its proper divisors (1784519).

194661793 is a wasteful number, since it uses less digits than its factorization.

194661793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771.

The product of its digits is 244944, while the sum is 46.

The square root of 194661793 is about 13952.1250352769. The cubic root of 194661793 is about 579.5535535889.

The spelling of 194661793 in words is "one hundred ninety-four million, six hundred sixty-one thousand, seven hundred ninety-three".