194677345 has 4 divisors (see below), whose sum is σ = 233612820. Its totient is φ = 155741872.

The previous prime is 194677339. The next prime is 194677361. The reversal of 194677345 is 543776491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543776491 = 3989 ⋅136319.

It can be written as a sum of positive squares in 2 ways, for example, as 134397649 + 60279696 = 11593^2 + 7764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194677345 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194677295 and 194677304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19467730 + ... + 19467739.

It is an arithmetic number, because the mean of its divisors is an integer number (58403205).

Almost surely, 2^194677345 is an apocalyptic number.

It is an amenable number.

194677345 is a deficient number, since it is larger than the sum of its proper divisors (38935475).

194677345 is an equidigital number, since it uses as much as digits as its factorization.

194677345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38935474.

The product of its digits is 635040, while the sum is 46.

The square root of 194677345 is about 13952.6823586004. The cubic root of 194677345 is about 579.5689871548.

The spelling of 194677345 in words is "one hundred ninety-four million, six hundred seventy-seven thousand, three hundred forty-five".