194126913 has 6 divisors (see below), whose sum is σ = 280405554. Its totient is φ = 129417936.

The previous prime is 194126909. The next prime is 194126917. The reversal of 194126913 is 319621491.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (194126909) and next prime (194126917).

It can be written as a sum of positive squares in only one way, i.e., 179747649 + 14379264 = 13407^2 + 3792^2 .

It is not a de Polignac number, because 194126913 - 2² = 194126909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194126917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10784820 + ... + 10784837.

It is an arithmetic number, because the mean of its divisors is an integer number (46734259).

Almost surely, 2^194126913 is an apocalyptic number.

It is an amenable number.

194126913 is a deficient number, since it is larger than the sum of its proper divisors (86278641).

194126913 is a wasteful number, since it uses less digits than its factorization.

194126913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21569663 (or 21569660 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 194126913 is about 13932.9434435083. The cubic root of 194126913 is about 579.0222458275.

The spelling of 194126913 in words is "one hundred ninety-four million, one hundred twenty-six thousand, nine hundred thirteen".