2228916945 has 16 divisors (see below), whose sum is σ = 3689242560. Its totient is φ = 1147763904.

The previous prime is 2228916919. The next prime is 2228916947. The reversal of 2228916945 is 5496198222.

It is not a de Polignac number, because 2228916945 - 2⁷ = 2228916817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2228916894 and 2228916903.

It is not an unprimeable number, because it can be changed into a prime (2228916947) 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, 2561539 + ... + 2562408.

It is an arithmetic number, because the mean of its divisors is an integer number (230577660).

Almost surely, 2^2228916945 is an apocalyptic number.

It is an amenable number.

2228916945 is a deficient number, since it is larger than the sum of its proper divisors (1460325615).

2228916945 is a wasteful number, since it uses less digits than its factorization.

2228916945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5123984.

The product of its digits is 622080, while the sum is 48.

The square root of 2228916945 is about 47211.4069373070. The cubic root of 2228916945 is about 1306.2650143036.

The spelling of 2228916945 in words is "two billion, two hundred twenty-eight million, nine hundred sixteen thousand, nine hundred forty-five".