2209638456 has 96 divisors (see below), whose sum is σ = 6071869440. Its totient is φ = 725868864.

The previous prime is 2209638443. The next prime is 2209638467. The reversal of 2209638456 is 6548369022.

2209638456 is a `hidden beast` number, since 2 + 2 + 0 + 9 + 638 + 4 + 5 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1526325 + ... + 1527771.

It is an arithmetic number, because the mean of its divisors is an integer number (63248640).

Almost surely, 2^2209638456 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 2209638456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3035934720).

2209638456 is an abundant number, since it is smaller than the sum of its proper divisors (3862230984).

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

2209638456 is a wasteful number, since it uses less digits than its factorization.

2209638456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753 (or 1746 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 2209638456 is about 47006.7915944069. The cubic root of 2209638456 is about 1302.4880273189.

The spelling of 2209638456 in words is "two billion, two hundred nine million, six hundred thirty-eight thousand, four hundred fifty-six".