211494194 has 4 divisors (see below), whose sum is σ = 317241294. Its totient is φ = 105747096.

The previous prime is 211494193. The next prime is 211494203. The reversal of 211494194 is 491494112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 189750625 + 21743569 = 13775^2 + 4663^2 .

It is not an unprimeable number, because it can be changed into a prime (211494193) by changing a digit.

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, 52873547 + ... + 52873550.

Almost surely, 2^211494194 is an apocalyptic number.

211494194 is a deficient number, since it is larger than the sum of its proper divisors (105747100).

211494194 is a wasteful number, since it uses less digits than its factorization.

211494194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105747099.

The product of its digits is 10368, while the sum is 35.

The square root of 211494194 is about 14542.8399564872. The cubic root of 211494194 is about 595.7986065644.

The spelling of 211494194 in words is "two hundred eleven million, four hundred ninety-four thousand, one hundred ninety-four".