194317961 has 4 divisors (see below), whose sum is σ = 202766592. Its totient is φ = 185869332.

The previous prime is 194317943. The next prime is 194317967. The reversal of 194317961 is 169713491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 169713491 = 19 ⋅8932289.

It is a cyclic number.

It is not a de Polignac number, because 194317961 - 2¹⁰ = 194316937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194317967) 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 3 ways as a sum of consecutive naturals, for example, 4224281 + ... + 4224326.

It is an arithmetic number, because the mean of its divisors is an integer number (50691648).

Almost surely, 2^194317961 is an apocalyptic number.

It is an amenable number.

194317961 is a deficient number, since it is larger than the sum of its proper divisors (8448631).

194317961 is an equidigital number, since it uses as much as digits as its factorization.

194317961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8448630.

The product of its digits is 40824, while the sum is 41.

The square root of 194317961 is about 13939.7977388483. The cubic root of 194317961 is about 579.2121298082.

The spelling of 194317961 in words is "one hundred ninety-four million, three hundred seventeen thousand, nine hundred sixty-one".