2209640850 has 96 divisors (see below), whose sum is σ = 6113983680. Its totient is φ = 586800000.

The previous prime is 2209640837. The next prime is 2209640863. The reversal of 2209640850 is 580469022.

It is a happy number.

2209640850 is a `hidden beast` number, since 2 + 2 + 0 + 9 + 640 + 8 + 5 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (2209640837) and next prime (2209640863).

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, 335590 + ... + 342110.

It is an arithmetic number, because the mean of its divisors is an integer number (63687330).

Almost surely, 2^2209640850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2209640850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3056991840).

2209640850 is an abundant number, since it is smaller than the sum of its proper divisors (3904342830).

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

2209640850 is a wasteful number, since it uses less digits than its factorization.

2209640850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6793 (or 6782 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2209640850 is about 47006.8170588054. The cubic root of 2209640850 is about 1302.4884977058.

The spelling of 2209640850 in words is "two billion, two hundred nine million, six hundred forty thousand, eight hundred fifty".