2178314349 has 16 divisors (see below), whose sum is σ = 2935296000. Its totient is φ = 1436797296.

The previous prime is 2178314269. The next prime is 2178314377. The reversal of 2178314349 is 9434138712.

It is not a de Polignac number, because 2178314349 - 2¹⁷ = 2178183277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2178314349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2178314549) 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, 429772 + ... + 434810.

It is an arithmetic number, because the mean of its divisors is an integer number (183456000).

Almost surely, 2^2178314349 is an apocalyptic number.

It is an amenable number.

2178314349 is a deficient number, since it is larger than the sum of its proper divisors (756981651).

2178314349 is a wasteful number, since it uses less digits than its factorization.

2178314349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6544.

The product of its digits is 145152, while the sum is 42.

The square root of 2178314349 is about 46672.4152899762. The cubic root of 2178314349 is about 1296.3039690286.

The spelling of 2178314349 in words is "two billion, one hundred seventy-eight million, three hundred fourteen thousand, three hundred forty-nine".