2194028078 has 32 divisors (see below), whose sum is σ = 3799111680. Its totient is φ = 939816000.

The previous prime is 2194028077. The next prime is 2194028117. The reversal of 2194028078 is 8708204912.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194028071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66098 + ... + 93578.

It is an arithmetic number, because the mean of its divisors is an integer number (118722240).

Almost surely, 2^2194028078 is an apocalyptic number.

2194028078 is a deficient number, since it is larger than the sum of its proper divisors (1605083602).

2194028078 is a wasteful number, since it uses less digits than its factorization.

2194028078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27704.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 2194028078 is about 46840.4534350384. The cubic root of 2194028078 is about 1299.4135575807.

The spelling of 2194028078 in words is "two billion, one hundred ninety-four million, twenty-eight thousand, seventy-eight".