194126397 has 16 divisors (see below), whose sum is σ = 261802560. Its totient is φ = 127942272.

The previous prime is 194126393. The next prime is 194126407. The reversal of 194126397 is 793621491.

It is not a de Polignac number, because 194126397 - 2² = 194126393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194126393) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 115479 + ... + 117147.

It is an arithmetic number, because the mean of its divisors is an integer number (16362660).

Almost surely, 2^194126397 is an apocalyptic number.

It is an amenable number.

194126397 is a deficient number, since it is larger than the sum of its proper divisors (67676163).

194126397 is a wasteful number, since it uses less digits than its factorization.

194126397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092.

The product of its digits is 81648, while the sum is 42.

The square root of 194126397 is about 13932.9249262314. The cubic root of 194126397 is about 579.0217328027.

The spelling of 194126397 in words is "one hundred ninety-four million, one hundred twenty-six thousand, three hundred ninety-seven".