194942311 has 2 divisors, whose sum is σ = 194942312. Its totient is φ = 194942310.

The previous prime is 194942309. The next prime is 194942389. The reversal of 194942311 is 113249491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194942311 - 2¹ = 194942309 is a prime.

Together with 194942309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194940311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97471155 + 97471156.

It is an arithmetic number, because the mean of its divisors is an integer number (97471156).

Almost surely, 2^194942311 is an apocalyptic number.

194942311 is a deficient number, since it is larger than the sum of its proper divisors (1).

194942311 is an equidigital number, since it uses as much as digits as its factorization.

194942311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 194942311 is about 13962.1742934258. The cubic root of 194942311 is about 579.8318091393.

The spelling of 194942311 in words is "one hundred ninety-four million, nine hundred forty-two thousand, three hundred eleven".