1030630561 has 4 divisors (see below), whose sum is σ = 1030698900. Its totient is φ = 1030562224.

The previous prime is 1030630543. The next prime is 1030630607. The reversal of 1030630561 is 1650360301.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 749062161 + 281568400 = 27369^2 + 16780^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030630561 - 2²³ = 1022241953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1030630261) 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, 466 + ... + 45403.

It is an arithmetic number, because the mean of its divisors is an integer number (257674725).

Almost surely, 2^1030630561 is an apocalyptic number.

It is an amenable number.

1030630561 is a deficient number, since it is larger than the sum of its proper divisors (68339).

1030630561 is an equidigital number, since it uses as much as digits as its factorization.

1030630561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68338.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1030630561 is about 32103.4353457695. The cubic root of 1030630561 is about 1010.1076776354.

Adding to 1030630561 its reverse (1650360301), we get a palindrome (2680990862).

The spelling of 1030630561 in words is "one billion, thirty million, six hundred thirty thousand, five hundred sixty-one".