2194591444 has 12 divisors (see below), whose sum is σ = 3843505204. Its totient is φ = 1096447104.

The previous prime is 2194591429. The next prime is 2194591547. The reversal of 2194591444 is 4441954912.

2194591444 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 1473024400 + 721567044 = 38380^2 + 26862^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2194591444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206319 + ... + 216694.

Almost surely, 2^2194591444 is an apocalyptic number.

It is an amenable number.

2194591444 is a deficient number, since it is larger than the sum of its proper divisors (1648913760).

2194591444 is a wasteful number, since it uses less digits than its factorization.

2194591444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424314 (or 424312 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 2194591444 is about 46846.4667184197. The cubic root of 2194591444 is about 1299.5247659374.

The spelling of 2194591444 in words is "two billion, one hundred ninety-four million, five hundred ninety-one thousand, four hundred forty-four".