2194738911 has 12 divisors (see below), whose sum is σ = 3171248080. Its totient is φ = 1462665600.

The previous prime is 2194738891. The next prime is 2194738919. The reversal of 2194738911 is 1198374912.

2194738911 is a `hidden beast` number, since 219 + 47 + 389 + 11 = 666.

2194738911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2194738911 - 2¹⁹ = 2194214623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194738919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11890 + ... + 67311.

Almost surely, 2^2194738911 is an apocalyptic number.

2194738911 is a deficient number, since it is larger than the sum of its proper divisors (976509169).

2194738911 is a wasteful number, since it uses less digits than its factorization.

2194738911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82286 (or 82283 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 2194738911 is about 46848.0406313861. The cubic root of 2194738911 is about 1299.5538727561.

The spelling of 2194738911 in words is "two billion, one hundred ninety-four million, seven hundred thirty-eight thousand, nine hundred eleven".