1630343525 has 6 divisors (see below), whose sum is σ = 2021626002. Its totient is φ = 1304274800.

The previous prime is 1630343513. The next prime is 1630343531. The reversal of 1630343525 is 5253430361.

It can be written as a sum of positive squares in 3 ways, for example, as 55920484 + 1574423041 = 7478^2 + 39679^2 .

It is not a de Polignac number, because 1630343525 - 2⁴ = 1630343509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1630343491 and 1630343500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32606846 + ... + 32606895.

It is an arithmetic number, because the mean of its divisors is an integer number (336937667).

Almost surely, 2^1630343525 is an apocalyptic number.

It is an amenable number.

1630343525 is a deficient number, since it is larger than the sum of its proper divisors (391282477).

1630343525 is an equidigital number, since it uses as much as digits as its factorization.

1630343525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65213751 (or 65213746 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 1630343525 is about 40377.5126153160. The cubic root of 1630343525 is about 1176.9545919464.

Adding to 1630343525 its reverse (5253430361), we get a palindrome (6883773886).

The spelling of 1630343525 in words is "one billion, six hundred thirty million, three hundred forty-three thousand, five hundred twenty-five".