1613012224 has 72 divisors (see below), whose sum is σ = 3445166088. Its totient is φ = 751042560.

The previous prime is 1613012221. The next prime is 1613012231. The reversal of 1613012224 is 4222103161.

It can be written as a sum of positive squares in 4 ways, for example, as 741581824 + 871430400 = 27232^2 + 29520^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1613012195 and 1613012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613012221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420234 + ... + 424054.

It is an arithmetic number, because the mean of its divisors is an integer number (47849529).

Almost surely, 2^1613012224 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 1613012224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1722583044).

1613012224 is an abundant number, since it is smaller than the sum of its proper divisors (1832153864).

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

1613012224 is an equidigital number, since it uses as much as digits as its factorization.

1613012224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951 (or 3937 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1613012224 is about 40162.3234387653. The cubic root of 1613012224 is about 1172.7692031020.

Adding to 1613012224 its reverse (4222103161), we get a palindrome (5835115385).

The spelling of 1613012224 in words is "one billion, six hundred thirteen million, twelve thousand, two hundred twenty-four".