194162218 has 4 divisors (see below), whose sum is σ = 291243330. Its totient is φ = 97081108.

The previous prime is 194162203. The next prime is 194162239. The reversal of 194162218 is 812261491.

It is a happy number.

194162218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 812261491 = 23 ⋅35315717.

It can be written as a sum of positive squares in only one way, i.e., 154181889 + 39980329 = 12417^2 + 6323^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48540553 + ... + 48540556.

Almost surely, 2^194162218 is an apocalyptic number.

194162218 is a deficient number, since it is larger than the sum of its proper divisors (97081112).

194162218 is an equidigital number, since it uses as much as digits as its factorization.

194162218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97081111.

The product of its digits is 6912, while the sum is 34.

The square root of 194162218 is about 13934.2103471994. The cubic root of 194162218 is about 579.0573451017.

The spelling of 194162218 in words is "one hundred ninety-four million, one hundred sixty-two thousand, two hundred eighteen".