1630210105 has 4 divisors (see below), whose sum is σ = 1956252132. Its totient is φ = 1304168080.

The previous prime is 1630210103. The next prime is 1630210133. The reversal of 1630210105 is 5010120361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 268009641 + 1362200464 = 16371^2 + 36908^2 .

It is not a de Polignac number, because 1630210105 - 2¹ = 1630210103 is a prime.

It is a super-2 number, since 2×1630210105² = 5315169972888222050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630210103) 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, 163021006 + ... + 163021015.

It is an arithmetic number, because the mean of its divisors is an integer number (489063033).

Almost surely, 2^1630210105 is an apocalyptic number.

It is an amenable number.

1630210105 is a deficient number, since it is larger than the sum of its proper divisors (326042027).

1630210105 is an equidigital number, since it uses as much as digits as its factorization.

1630210105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326042026.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1630210105 is about 40375.8604242684. The cubic root of 1630210105 is about 1176.9224855093.

Adding to 1630210105 its reverse (5010120361), we get a palindrome (6640330466).

The spelling of 1630210105 in words is "one billion, six hundred thirty million, two hundred ten thousand, one hundred five".