2220131394 has 48 divisors (see below), whose sum is σ = 5212177152. Its totient is φ = 678914784.

The previous prime is 2220131377. The next prime is 2220131401. The reversal of 2220131394 is 4931310222.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9039 + ... + 67245.

It is an arithmetic number, because the mean of its divisors is an integer number (108587024).

Almost surely, 2^2220131394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2220131394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2606088576).

2220131394 is an abundant number, since it is smaller than the sum of its proper divisors (2992045758).

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

2220131394 is a wasteful number, since it uses less digits than its factorization.

2220131394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58391 (or 58388 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2220131394 is about 47118.2702780991. The cubic root of 2220131394 is about 1304.5464861793.

The spelling of 2220131394 in words is "two billion, two hundred twenty million, one hundred thirty-one thousand, three hundred ninety-four".