2191438174 has 16 divisors (see below), whose sum is σ = 3398048640. Its totient is φ = 1058856480.

The previous prime is 2191438141. The next prime is 2191438201. The reversal of 2191438174 is 4718341912.

2191438174 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19032 + ... + 68884.

It is an arithmetic number, because the mean of its divisors is an integer number (212378040).

Almost surely, 2^2191438174 is an apocalyptic number.

2191438174 is a deficient number, since it is larger than the sum of its proper divisors (1206610466).

2191438174 is a wasteful number, since it uses less digits than its factorization.

2191438174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50595.

The product of its digits is 48384, while the sum is 40.

The square root of 2191438174 is about 46812.7992540502. The cubic root of 2191438174 is about 1298.9020658841.

The spelling of 2191438174 in words is "two billion, one hundred ninety-one million, four hundred thirty-eight thousand, one hundred seventy-four".