2251630330 has 16 divisors (see below), whose sum is σ = 4054114440. Its totient is φ = 900389952.

The previous prime is 2251630327. The next prime is 2251630351. The reversal of 2251630330 is 330361522.

It is a happy number.

2251630330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1729644921 + 521985409 = 41589^2 + 22847^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2251630295 and 2251630304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5416 + ... + 67324.

Almost surely, 2^2251630330 is an apocalyptic number.

2251630330 is a deficient number, since it is larger than the sum of its proper divisors (1802484110).

2251630330 is a wasteful number, since it uses less digits than its factorization.

2251630330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65553.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 2251630330 is about 47451.3469777202. The cubic root of 2251630330 is about 1310.6871150120.

Adding to 2251630330 its reverse (330361522), we get a palindrome (2581991852).

The spelling of 2251630330 in words is "two billion, two hundred fifty-one million, six hundred thirty thousand, three hundred thirty".