2228866638 has 8 divisors (see below), whose sum is σ = 4457733288. Its totient is φ = 742955544.

The previous prime is 2228866631. The next prime is 2228866657. The reversal of 2228866638 is 8366688222.

2228866638 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 sphenic number, since it is the product of 3 distinct primes.

2228866638 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228866631) 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, 185738881 + ... + 185738892.

It is an arithmetic number, because the mean of its divisors is an integer number (557216661).

Almost surely, 2^2228866638 is an apocalyptic number.

2228866638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2228866638 is a wasteful number, since it uses less digits than its factorization.

2228866638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371477778.

The product of its digits is 2654208, while the sum is 51.

The square root of 2228866638 is about 47210.8741499244. The cubic root of 2228866638 is about 1306.2551866952.

The spelling of 2228866638 in words is "two billion, two hundred twenty-eight million, eight hundred sixty-six thousand, six hundred thirty-eight".