194003038316261 has 16 divisors (see below), whose sum is σ = 201164330188800. Its totient is φ = 186898425408000.

The previous prime is 194003038316257. The next prime is 194003038316267. The reversal of 194003038316261 is 162613830300491.

It is a cyclic number.

It is not a de Polignac number, because 194003038316261 - 2² = 194003038316257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194003038316267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48028661 + ... + 51911061.

It is an arithmetic number, because the mean of its divisors is an integer number (12572770636800).

Almost surely, 2^{194003038316261} is an apocalyptic number.

It is an amenable number.

194003038316261 is a deficient number, since it is larger than the sum of its proper divisors (7161291872539).

194003038316261 is a wasteful number, since it uses less digits than its factorization.

194003038316261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889700.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 194003038316261 in words is "one hundred ninety-four trillion, three billion, thirty-eight million, three hundred sixteen thousand, two hundred sixty-one".