2238445836 has 144 divisors (see below), whose sum is σ = 6481762560. Its totient is φ = 644730240.

The previous prime is 2238445771. The next prime is 2238445849. The reversal of 2238445836 is 6385448322.

2238445836 is a `hidden beast` number, since 2 + 23 + 8 + 44 + 583 + 6 = 666.

2238445836 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 junction number, because it is equal to n+sod(n) for n = 2238445791 and 2238445800.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1629646 + ... + 1631018.

It is an arithmetic number, because the mean of its divisors is an integer number (45012240).

Almost surely, 2^2238445836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2238445836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3240881280).

2238445836 is an abundant number, since it is smaller than the sum of its proper divisors (4243316724).

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

2238445836 is a wasteful number, since it uses less digits than its factorization.

2238445836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596 (or 1591 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 45.

The square root of 2238445836 is about 47312.2165618987. The cubic root of 2238445836 is about 1308.1238484980.

The spelling of 2238445836 in words is "two billion, two hundred thirty-eight million, four hundred forty-five thousand, eight hundred thirty-six".