194886312266 has 4 divisors (see below), whose sum is σ = 292329468402. Its totient is φ = 97443156132.

The previous prime is 194886312151. The next prime is 194886312281. The reversal of 194886312266 is 662213688491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 662213688491 = 43 ⋅15400318337.

It can be written as a sum of positive squares in only one way, i.e., 177481051225 + 17405261041 = 421285^2 + 131929^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 48721578065 + ... + 48721578068.

Almost surely, 2^194886312266 is an apocalyptic number.

194886312266 is a deficient number, since it is larger than the sum of its proper divisors (97443156136).

194886312266 is an equidigital number, since it uses as much as digits as its factorization.

194886312266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97443156135.

The product of its digits is 5971968, while the sum is 56.

The spelling of 194886312266 in words is "one hundred ninety-four billion, eight hundred eighty-six million, three hundred twelve thousand, two hundred sixty-six".