4228319561 has 4 divisors (see below), whose sum is σ = 4231382724. Its totient is φ = 4225256400.

The previous prime is 4228319551. The next prime is 4228319569. The reversal of 4228319561 is 1659138224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2363807161 + 1864512400 = 48619^2 + 43180^2 .

It is a cyclic number.

It is not a de Polignac number, because 4228319561 - 2⁶ = 4228319497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4228319569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1529510 + ... + 1532271.

It is an arithmetic number, because the mean of its divisors is an integer number (1057845681).

Almost surely, 2^4228319561 is an apocalyptic number.

It is an amenable number.

4228319561 is a deficient number, since it is larger than the sum of its proper divisors (3063163).

4228319561 is a wasteful number, since it uses less digits than its factorization.

4228319561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3063162.

The product of its digits is 103680, while the sum is 41.

The square root of 4228319561 is about 65025.5300708883. The cubic root of 4228319561 is about 1617.0468427100.

The spelling of 4228319561 in words is "four billion, two hundred twenty-eight million, three hundred nineteen thousand, five hundred sixty-one".