2194198378 has 8 divisors (see below), whose sum is σ = 3291619968. Its totient is φ = 1096991724.

The previous prime is 2194198351. The next prime is 2194198379. The reversal of 2194198378 is 8738914912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2194198379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25176 + ... + 70867.

It is an arithmetic number, because the mean of its divisors is an integer number (411452496).

Almost surely, 2^2194198378 is an apocalyptic number.

2194198378 is a deficient number, since it is larger than the sum of its proper divisors (1097421590).

2194198378 is a wasteful number, since it uses less digits than its factorization.

2194198378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107468.

The product of its digits is 870912, while the sum is 52.

The square root of 2194198378 is about 46842.2712728578. The cubic root of 2194198378 is about 1299.4471767803.

The spelling of 2194198378 in words is "two billion, one hundred ninety-four million, one hundred ninety-eight thousand, three hundred seventy-eight".