2194087278 has 16 divisors (see below), whose sum is σ = 4539491280. Its totient is φ = 706142976.

The previous prime is 2194087271. The next prime is 2194087289. The reversal of 2194087278 is 8727804912.

2194087278 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194087271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6304675 + ... + 6305022.

It is an arithmetic number, because the mean of its divisors is an integer number (283718205).

Almost surely, 2^2194087278 is an apocalyptic number.

2194087278 is an abundant number, since it is smaller than the sum of its proper divisors (2345404002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2194087278 is a wasteful number, since it uses less digits than its factorization.

2194087278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12609731.

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 2194087278 is about 46841.0853631724. The cubic root of 2194087278 is about 1299.4252445461.

The spelling of 2194087278 in words is "two billion, one hundred ninety-four million, eighty-seven thousand, two hundred seventy-eight".