194345515323241 has 2 divisors, whose sum is σ = 194345515323242. Its totient is φ = 194345515323240.

The previous prime is 194345515323233. The next prime is 194345515323263. The reversal of 194345515323241 is 142323515543491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163711282890841 + 30634232432400 = 12794971^2 + 5534820^2 .

It is an emirp because it is prime and its reverse (142323515543491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194345515323241 - 2³ = 194345515323233 is a prime.

It is a super-2 number, since 2×194345515323241² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (194345515326241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97172757661620 + 97172757661621.

It is an arithmetic number, because the mean of its divisors is an integer number (97172757661621).

Almost surely, 2^{194345515323241} is an apocalyptic number.

It is an amenable number.

194345515323241 is a deficient number, since it is larger than the sum of its proper divisors (1).

194345515323241 is an equidigital number, since it uses as much as digits as its factorization.

194345515323241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776000, while the sum is 52.

The spelling of 194345515323241 in words is "one hundred ninety-four trillion, three hundred forty-five billion, five hundred fifteen million, three hundred twenty-three thousand, two hundred forty-one".