2208956816 has 40 divisors (see below), whose sum is σ = 4682911584. Its totient is φ = 1001064960.

The previous prime is 2208956791. The next prime is 2208956819. The reversal of 2208956816 is 6186598022.

It is not an unprimeable number, because it can be changed into a prime (2208956819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40691 + ... + 77933.

Almost surely, 2^2208956816 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 2208956816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2341455792).

2208956816 is an abundant number, since it is smaller than the sum of its proper divisors (2473954768).

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

2208956816 is a wasteful number, since it uses less digits than its factorization.

2208956816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37599 (or 37593 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 2208956816 is about 46999.5405934994. The cubic root of 2208956816 is about 1302.3540809341.

The spelling of 2208956816 in words is "two billion, two hundred eight million, nine hundred fifty-six thousand, eight hundred sixteen".