194193313 has 4 divisors (see below), whose sum is σ = 194221188. Its totient is φ = 194165440.

The previous prime is 194193277. The next prime is 194193323. The reversal of 194193313 is 313391491.

It is a happy number.

194193313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 56670784 + 137522529 = 7528^2 + 11727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194193313 is a prime.

It is a super-2 number, since 2×194193313² = 75422085627831938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194193323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6645 + ... + 20797.

It is an arithmetic number, because the mean of its divisors is an integer number (48555297).

Almost surely, 2^194193313 is an apocalyptic number.

It is an amenable number.

194193313 is a deficient number, since it is larger than the sum of its proper divisors (27875).

194193313 is a wasteful number, since it uses less digits than its factorization.

194193313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27874.

The product of its digits is 8748, while the sum is 34.

The square root of 194193313 is about 13935.3260815813. The cubic root of 194193313 is about 579.0882553842.

The spelling of 194193313 in words is "one hundred ninety-four million, one hundred ninety-three thousand, three hundred thirteen".