1630500005 has 8 divisors (see below), whose sum is σ = 2071694232. Its totient is φ = 1227670528.

The previous prime is 1630499999. The next prime is 1630500043. The reversal of 1630500005 is 5000050361.

It can be written as a sum of positive squares in 4 ways, for example, as 323388289 + 1307111716 = 17983^2 + 36154^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1630500005 - 2⁴ = 1630499989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1630500005.

It is a congruent number.

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, 9591092 + ... + 9591261.

It is an arithmetic number, because the mean of its divisors is an integer number (258961779).

Almost surely, 2^1630500005 is an apocalyptic number.

It is an amenable number.

1630500005 is a deficient number, since it is larger than the sum of its proper divisors (441194227).

1630500005 is a wasteful number, since it uses less digits than its factorization.

1630500005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19182375.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 1630500005 is about 40379.4502810526. The cubic root of 1630500005 is about 1176.9922453529.

Adding to 1630500005 its reverse (5000050361), we get a palindrome (6630550366).

The spelling of 1630500005 in words is "one billion, six hundred thirty million, five hundred thousand, five".