194245691699 has 2 divisors, whose sum is σ = 194245691700. Its totient is φ = 194245691698.

The previous prime is 194245691693. The next prime is 194245691719. The reversal of 194245691699 is 996196542491.

194245691699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194245691699 - 2²⁴ = 194228914483 is a prime.

It is not a weakly prime, because it can be changed into another prime (194245691693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97122845849 + 97122845850.

It is an arithmetic number, because the mean of its divisors is an integer number (97122845850).

Almost surely, 2^194245691699 is an apocalyptic number.

194245691699 is a deficient number, since it is larger than the sum of its proper divisors (1).

194245691699 is an equidigital number, since it uses as much as digits as its factorization.

194245691699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37791360, while the sum is 65.

The spelling of 194245691699 in words is "one hundred ninety-four billion, two hundred forty-five million, six hundred ninety-one thousand, six hundred ninety-nine".