220394194 has 4 divisors (see below), whose sum is σ = 330591294. Its totient is φ = 110197096.

The previous prime is 220394189. The next prime is 220394197. The reversal of 220394194 is 491493022.

220394194 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: 491493022 = 2 ⋅245746511.

It can be written as a sum of positive squares in only one way, i.e., 220077225 + 316969 = 14835^2 + 563^2 .

It is not an unprimeable number, because it can be changed into a prime (220394197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55098547 + ... + 55098550.

Almost surely, 2^220394194 is an apocalyptic number.

220394194 is a deficient number, since it is larger than the sum of its proper divisors (110197100).

220394194 is a wasteful number, since it uses less digits than its factorization.

220394194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110197099.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 220394194 is about 14845.6793040938. The cubic root of 220394194 is about 604.0414152997.

The spelling of 220394194 in words is "two hundred twenty million, three hundred ninety-four thousand, one hundred ninety-four".