194279101 has 2 divisors, whose sum is σ = 194279102. Its totient is φ = 194279100.

The previous prime is 194279081. The next prime is 194279143. The reversal of 194279101 is 101972491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189035001 + 5244100 = 13749^2 + 2290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194279101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194279191) 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, 97139550 + 97139551.

It is an arithmetic number, because the mean of its divisors is an integer number (97139551).

Almost surely, 2^194279101 is an apocalyptic number.

It is an amenable number.

194279101 is a deficient number, since it is larger than the sum of its proper divisors (1).

194279101 is an equidigital number, since it uses as much as digits as its factorization.

194279101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 194279101 is about 13938.4038182283. The cubic root of 194279101 is about 579.1735166613.

The spelling of 194279101 in words is "one hundred ninety-four million, two hundred seventy-nine thousand, one hundred one".