2226918978 has 72 divisors (see below), whose sum is σ = 5395512720. Its totient is φ = 661841280.

The previous prime is 2226918943. The next prime is 2226919021. The reversal of 2226918978 is 8798196222.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 87573 + ... + 110103.

Almost surely, 2^2226918978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2226918978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2697756360).

2226918978 is an abundant number, since it is smaller than the sum of its proper divisors (3168593742).

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

2226918978 is a wasteful number, since it uses less digits than its factorization.

2226918978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22592 (or 22572 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 2226918978 is about 47190.2424024289. The cubic root of 2226918978 is about 1305.8745923091.

The spelling of 2226918978 in words is "two billion, two hundred twenty-six million, nine hundred eighteen thousand, nine hundred seventy-eight".