194426159 has 2 divisors, whose sum is σ = 194426160. Its totient is φ = 194426158.

The previous prime is 194426149. The next prime is 194426173. The reversal of 194426159 is 951624491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194426159 - 2²⁴ = 177648943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194426129) 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, 97213079 + 97213080.

It is an arithmetic number, because the mean of its divisors is an integer number (97213080).

Almost surely, 2^194426159 is an apocalyptic number.

194426159 is a deficient number, since it is larger than the sum of its proper divisors (1).

194426159 is an equidigital number, since it uses as much as digits as its factorization.

194426159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 194426159 is about 13943.6781015627. The cubic root of 194426159 is about 579.3196133807.

The spelling of 194426159 in words is "one hundred ninety-four million, four hundred twenty-six thousand, one hundred fifty-nine".