2209215690 has 192 divisors, whose sum is σ = 6636090240. Its totient is φ = 504299520.

The previous prime is 2209215689. The next prime is 2209215691. The reversal of 2209215690 is 965129022.

It is a happy number.

2209215690 is a `hidden beast` number, since 2 + 2 + 0 + 92 + 1 + 569 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (2209215689) and next prime (2209215691).

It is a super-2 number, since 2×2209215690² = 9761267929884352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2209215691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4833942 + ... + 4834398.

It is an arithmetic number, because the mean of its divisors is an integer number (34562970).

Almost surely, 2^2209215690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2209215690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3318045120).

2209215690 is an abundant number, since it is smaller than the sum of its proper divisors (4426874550).

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

2209215690 is a wasteful number, since it uses less digits than its factorization.

2209215690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 2209215690 is about 47002.2945184594. The cubic root of 2209215690 is about 1302.4049544865.

The spelling of 2209215690 in words is "two billion, two hundred nine million, two hundred fifteen thousand, six hundred ninety".