211938194 has 8 divisors (see below), whose sum is σ = 342361740. Its totient is φ = 97817616.

The previous prime is 211938193. The next prime is 211938203. The reversal of 211938194 is 491839112.

211938194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 210627169 + 1311025 = 14513^2 + 1145^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (211938191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4075709 + ... + 4075760.

Almost surely, 2^211938194 is an apocalyptic number.

211938194 is a deficient number, since it is larger than the sum of its proper divisors (130423546).

211938194 is a wasteful number, since it uses less digits than its factorization.

211938194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8151484.

The product of its digits is 15552, while the sum is 38.

The square root of 211938194 is about 14558.0971970928. The cubic root of 211938194 is about 596.2152447632.

The spelling of 211938194 in words is "two hundred eleven million, nine hundred thirty-eight thousand, one hundred ninety-four".