1630513501 has 4 divisors (see below), whose sum is σ = 1630597500. Its totient is φ = 1630429504.

The previous prime is 1630513457. The next prime is 1630513513. The reversal of 1630513501 is 1053150361.

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 74132100 + 1556381401 = 8610^2 + 39451^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630513501 - 2¹⁹ = 1629989213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630513561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3675 + ... + 57223.

It is an arithmetic number, because the mean of its divisors is an integer number (407649375).

Almost surely, 2^1630513501 is an apocalyptic number.

It is an amenable number.

1630513501 is a deficient number, since it is larger than the sum of its proper divisors (83999).

1630513501 is an equidigital number, since it uses as much as digits as its factorization.

1630513501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83998.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 1630513501 is about 40379.6173954137. The cubic root of 1630513501 is about 1176.9954927502.

Adding to 1630513501 its reverse (1053150361), we get a palindrome (2683663862).

The spelling of 1630513501 in words is "one billion, six hundred thirty million, five hundred thirteen thousand, five hundred one".