1630440233 has 16 divisors (see below), whose sum is σ = 1794960000. Its totient is φ = 1474083072.

The previous prime is 1630440221. The next prime is 1630440239. The reversal of 1630440233 is 3320440361.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1630440233 - 2²⁰ = 1629391657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630440239) 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, 89798 + ... + 106416.

It is an arithmetic number, because the mean of its divisors is an integer number (112185000).

Almost surely, 2^1630440233 is an apocalyptic number.

It is an amenable number.

1630440233 is a deficient number, since it is larger than the sum of its proper divisors (164519767).

1630440233 is a wasteful number, since it uses less digits than its factorization.

1630440233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16864.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 1630440233 is about 40378.7101453229. The cubic root of 1630440233 is about 1176.9778628445.

Adding to 1630440233 its reverse (3320440361), we get a palindrome (4950880594).

The spelling of 1630440233 in words is "one billion, six hundred thirty million, four hundred forty thousand, two hundred thirty-three".