2205278438 has 16 divisors (see below), whose sum is σ = 3621675024. Its totient is φ = 998777760.

The previous prime is 2205278429. The next prime is 2205278501. The reversal of 2205278438 is 8348725022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2205278395 and 2205278404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174845 + ... + 187032.

It is an arithmetic number, because the mean of its divisors is an integer number (226354689).

Almost surely, 2^2205278438 is an apocalyptic number.

2205278438 is a deficient number, since it is larger than the sum of its proper divisors (1416396586).

2205278438 is a wasteful number, since it uses less digits than its factorization.

2205278438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362167.

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 2205278438 is about 46960.3922257896. The cubic root of 2205278438 is about 1301.6307814232.

The spelling of 2205278438 in words is "two billion, two hundred five million, two hundred seventy-eight thousand, four hundred thirty-eight".