2208993556 has 48 divisors (see below), whose sum is σ = 4828561920. Its totient is φ = 859050720.

The previous prime is 2208993491. The next prime is 2208993557. The reversal of 2208993556 is 6553998022.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2208993557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167035 + ... + 179773.

It is an arithmetic number, because the mean of its divisors is an integer number (100595040).

Almost surely, 2^2208993556 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 2208993556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2414280960).

2208993556 is an abundant number, since it is smaller than the sum of its proper divisors (2619568364).

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

2208993556 is a wasteful number, since it uses less digits than its factorization.

2208993556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13324 (or 13322 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

The square root of 2208993556 is about 46999.9314467585. The cubic root of 2208993556 is about 1302.3613012690.

The spelling of 2208993556 in words is "two billion, two hundred eight million, nine hundred ninety-three thousand, five hundred fifty-six".