194679413 has 2 divisors, whose sum is σ = 194679414. Its totient is φ = 194679412.

The previous prime is 194679389. The next prime is 194679431. The reversal of 194679413 is 314976491.

Together with next prime (194679431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169859089 + 24820324 = 13033^2 + 4982^2 .

It is an emirp because it is prime and its reverse (314976491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194679413 - 2⁸ = 194679157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194679013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97339706 + 97339707.

It is an arithmetic number, because the mean of its divisors is an integer number (97339707).

Almost surely, 2^194679413 is an apocalyptic number.

It is an amenable number.

194679413 is a deficient number, since it is larger than the sum of its proper divisors (1).

194679413 is an equidigital number, since it uses as much as digits as its factorization.

194679413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 194679413 is about 13952.7564660177. The cubic root of 194679413 is about 579.5710393444.

The spelling of 194679413 in words is "one hundred ninety-four million, six hundred seventy-nine thousand, four hundred thirteen".